WO2016110602A1 - Universal audio adapter system - Google Patents

Universal audio adapter system Download PDF

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Publication number
WO2016110602A1
WO2016110602A1 PCT/ES2015/070005 ES2015070005W WO2016110602A1 WO 2016110602 A1 WO2016110602 A1 WO 2016110602A1 ES 2015070005 W ES2015070005 W ES 2015070005W WO 2016110602 A1 WO2016110602 A1 WO 2016110602A1
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WO
WIPO (PCT)
Prior art keywords
analog
output
audio
signal
adapter system
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Application number
PCT/ES2015/070005
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Spanish (es)
French (fr)
Inventor
Daniel Gomez
Original Assignee
Nomad Soundtech, Sociedad Limitada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Nomad Soundtech, Sociedad Limitada filed Critical Nomad Soundtech, Sociedad Limitada
Priority to PCT/ES2015/070005 priority Critical patent/WO2016110602A1/en
Publication of WO2016110602A1 publication Critical patent/WO2016110602A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field

Definitions

  • the present invention belongs to the technical field of systems, devices and auxiliary elements for the treatment of audio signals. More specifically, the present invention relates to a universal audio adapter system that allows the capture of audio signals, their conversion (from analog to digital and / or from digital to analog) and the optimization and adaptation of said signals for different outputs audio With this, the system achieves a very significant improvement in the quality of any audio signal that is inserted into its input, allowing, in turn, its interconnection with any audio device (hence its universality). It has application both in the professional audio industry and in the domestic field, for the treatment of audio signals from music, television, radio, ... and generally speaking, on any device that requires an improvement in the quality of a signal from Audio.
  • the system includes a standard Serial Universal Bus (USB) interface
  • Universal Serial Bus to allow the interconnection and interaction of the adapter system with audio recording, editing and playback devices (such as phones, tablets, computers, personals, audio consoles, laptops, laptops ).
  • audio conversion devices that adapt the signal to a certain use, for example, for editing and / or recording, allowing the connection of, for example, a musical instrument to a computer to process it through an application of specific software, or allow the reproduction of music contained in the user's devices (for example, mobile phones, tablets, etc.).
  • the user's devices for example, mobile phones, tablets, etc.
  • all mobile devices phones, tablets, PDAs, etc.
  • the manufacturers have not concerned about the quality of the sound and, of course, they have not been designed thinking in areas where the quality of the audio is fundamental, as for example, in the music.
  • US patent application 2006/0048635 describes a device for the digital transmission of sound produced by the strings of an electric guitar.
  • This device is designed to capture the signal from the strings of a guitar individually and convert them to the digital domain.
  • the analog-digital conversion is done within the instrument itself, so it requires modifications to the musical instrument itself, in this case an electric guitar. It does not work through the usual output of the guitar, like a traditional amplifier, but string to string Therefore, it is not universally applicable, but is a specific solution for the guitar, specially designed for A / D (analog-digital) conversion.
  • a guitar is also described with a system designed to capture the signal from the strings and convert them to digital domain, providing USB output. But, as in the previous example, the conversion is performed within the instrument itself and involves modifications to it, so it is not universally applicable, that is, to other instruments or in general, to other devices that have an output audio
  • Patent application US 201 1/0146480 describes a digital connector for guitar and / or bass that is used for different portable user devices, typically Apple® devices (Pad 1/2/3, Phone 4 and 4S, Pod 4 generation), becoming practice such user devices in guitar amplifiers and musical effects processors. It features an input-output interface with a preamp for low-noise guitar audio and works with a large number of existing virtual guitar applications (apps) for Apple® devices. It has a cable with a digital connector on one end and a Jack connector for the instrument and a stereo mini Jack for headphones.
  • the present invention presents a system for the adaptation of audio that allows, for any device to which it is connected that emits an audio signal, to optimally convert said audio signal, guaranteeing at the output a high quality analog audio signal.
  • This system allows, for example, to convert an analog input signal to digital so that it is processed in an external digital device and a conversion of said processed digital signal to analog, providing the output with a high quality analog audio signal.
  • the sound processing and conversion media are optimally organized within the system.
  • the proposed system is of low complexity and can be manufactured in a housing, preferably of a small size that allows portability.
  • the The system can include an electronic component “analogizer” (preamp) to improve the quality of the analog output signal, returning the experience of analog sound that the user can perceive.
  • preamp an electronic component
  • This additional component functions as an amplifier of the limited bandwidth output signal and incorporates internal crosstalk interference adjustment.
  • a switch can be included that allows the user to choose between a direct route (without actuation of this "analog” component) and another route where the analog audio signal passes through this "analog” component.
  • One aspect of the invention relates to an audio adapter system, characterized in that it comprises the following components integrated in the same portable housing:
  • a conversion module consisting of a digital analog converter to convert the analog signal from the low pass filter into a digital audio signal and an analog digital converter to convert a digital signal received through the USB connector into an analog audio signal ;
  • the adapter system can also comprise a second analog audio output jack for headphones with an amplifier.
  • the adapter system in the adapter system all the analog output audio connectors of the adapter system are directly connected to the conversion module so that the analog input signal of said connectors is the analog output audio signal of the conversion module.
  • the adapter system further comprises:
  • an analog preamplifier comprising a bandpass filter and crosstalk adjustment means, connected to the output of the conversion module;
  • an analog preamplifier comprising a bandpass filter and crosstalk adjustment means, where all analog audio output connectors are connected to the analog preamp output;
  • a switch to select between a first position and a second position, where the switch has an input connected to an output of the conversion module and two outputs, a first output connected to all analog output audio connectors of the adapter system and a second output connected to the analog preamp input, and where in the first switch position, the switch input is connected to the first output so that the analog input signal of said output connectors is the analog audio output signal of the conversion module and in the second position of the switch, the input of the switch is connected to the second output so that the analog preamplifier is connected to the output of the conversion module, that is, the analog input signal of said preamplifier is The analog audio signal output of the conversion module.
  • the analog preamp can operate in a frequency band between 40Hz and 16KHz and / or can perform a crosstalk adjustment between 40dBs input channels.
  • the second amplifier buffer is low impedance.
  • the low pass filter can have a cutoff frequency of 20KHz.
  • the first amplifier is of variable impedance in a range between 4.7 kQ and 1 ⁇ .
  • the conversion module is integrated in a codec compatible with HID interfaces.
  • the analog audio connectors are Jack type connectors.
  • the adapter system may be externally connected to a third-party electronic device or it may be integrated into said electronic device (where the electronic device is a musical instrument, a television set, a radio, a computer, a microphone, a media player, home cinema, headphones, speakers, mixing console or any electronic audio or audiovisual device).
  • the electronic device is a musical instrument, a television set, a radio, a computer, a microphone, a media player, home cinema, headphones, speakers, mixing console or any electronic audio or audiovisual device.
  • the adapter system could be located on a pedal, either because the system is manufactured (the housing) in the form of a pedal or because it is integrated into the pedal of the electronic device to which it is connected, such as the pedal of a guitar or of any other instrument or device.
  • the adapter system is compatible with HID interfaces and includes one or more controls incorporated in the system, by which the user can interact with an electronic device to which the system is connected.
  • Simplicity in the manufacture of the adapter allows it to have an affordable cost.
  • not requiring a complex configuration by the user is very easy to use.
  • These 2 factors can lead to greater accessibility of high quality sound (as has happened with the video) so far only achievable with professional audio equipment (many more expensive and complex), putting maximum sound quality within everyone's reach and very simply and not just a few understood or audiophiles.
  • the adapter does not need to have batteries or plug it into an outlet on the mains, since it can be self-powered (from the electronic device that is connected to it) through the USB connection.
  • USB USB or external device charging
  • Figure 1 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
  • Figure 2 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
  • Figure 3 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
  • the present invention proposes a system for the adaptation of sound that allows, for any device to which it is connected that emits an audio signal, to optimally convert said signal, so that a high quality audio signal is obtained at its output. .
  • This adapter system can work with an analog audio signal at its input (which it receives from a device through for example an analog audio connector).
  • the device to which the adapter system is connected to receive the analog audio signal can be a microphone, a musical instrument, a sound reproduction device ... and in general any device capable of generating an analog audio signal.
  • This signal is processed and converted optimally to a digital signal and, through a USB connector, this signal can be downloaded to an electronic device (phone, tablet, computer etc.) for its process (record it, edit it, mix it ).
  • the digital audio signal is forwarded to the adapter that converts it to analog in an optimal way to offer a high quality analog audio signal to the output. This allows the digital signal to be recorded or processed (on the external electronic device) to the user's liking, relying on third-party processing and / or recording software (installed on the external electronic device). This option is very useful for example for music professionals.
  • the adapter system can receive, through the USB connector, a signal from an electronic device (for example, a song in mp3 format or in general any audio signal stored in the device in any digital format), converts it to analog and processes it to offer a high quality analog audio signal at the output.
  • an electronic device for example, a song in mp3 format or in general any audio signal stored in the device in any digital format
  • converts it to analog and processes it to offer a high quality analog audio signal at the output can be any electronic device capable of handling
  • the adapter is compatible with smartphones, MP3 players, computers (Mac or PC), laptops, digital TVs, tablets and, in general, any device capable of connecting via USB, without the need for any specific software (in case the device to which the adapter is connected needs to update its own software, it does so automatically; the proposed adapter does not interfere).
  • the adapter consists of different electronic elements or components.
  • a preferred embodiment of the invention can be seen in Figure 1, in which an analog audio adapter system (100) is presented, comprising the following electronic components:
  • the amplifier impedance range can be, for example, between 4.7 kQ and 1 ⁇ .
  • the performance of this amplifier allows any audio signal to be introduced into the adapter with guarantees of an optimal subsequent conversion, allowing the full range of sounds to be captured and nuances of the audio input signal (for example, if it is a signal from a concert, the entire range of sounds and nuances of the different instruments can be perceived).
  • This buffer receives the analog signal from a device that connects to the input of the adapter, for this the adapter will have at least one analog input audio jack, Jack type or any other type, which will allow you to receive an analog audio signal of the device (for example, of musical musical instruments that have a Jack connector, microphones etc.).
  • This variable impedance buffer will allow the signal of the instrument (or of several instruments if it is a concert, or in general, the analog audio signal that is introduced in the adapter) to be transferred to the electronic environment so and way that respects his sonic qualities, the musician's performance and in general, the interpretive experience.
  • a low pass filter (102) that filters the analog signal from the amplifier buffer (101), discarding frequencies that are outside the audible spectrum.
  • a cutoff frequency can be for example 20KhZ (although if it is required for a specific application other cutoff frequencies can be chosen).
  • a conversion module or device for example, a codec
  • analog digital and analog digital converters (103) that converts an analog audio signal into a digital audio signal (at a pre-process stage) and / or from a digital to an analog (in a post process stage), optimally.
  • These converters will be high-end, both arranged in order to guarantee an optimal conversion and a better sound experience. That is, they are conversones of much higher quality and performance than those offered by the A / D converters included in electronic devices (for example, the converters included in the "smart phones").
  • This module has an interface with a USB connector that allows you to send and receive digital audio signals to an electronic device (smartphones, MP3 players, Mac or PC computers, Ipads, Iphones, Ipods, Androids phones, laptops, tablets, digital TVs and, in general, any device capable of connecting via USB).
  • an electronic device smart phones, MP3 players, Mac or PC computers, Ipads, Iphones, Ipods, Androids phones, laptops, tablets, digital TVs and, in general, any device capable of connecting via USB).
  • this module performs 2 types of conversions:
  • an analog signal from the low pass filter
  • This digital signal is sent to the digital electronic device (any of those mentioned above) connected to the adapter through the USB connector (105) for processing (record, edit, mix ...) on that device.
  • the digital audio signal can be sent back to the adapter (via the USB connector) for (re) conversion to analogue
  • the codec optimally converts a digital signal from the electronic device (received through the USB connector) to analog to continue processing on the adapter.
  • This digital signal received in the codec can be the digital signal described in the previous paragraph (result of processing in the digital electronic device, the previously converted signal from analog to digital in the adapter) or it can be any digital audio signal stored in the electronic device (connected to the adapter through the USB connector) and that the user wishes to convert to analog.
  • the adapter system may include built-in controls to communicate and interact with the electronic device, for example, for the reproduction and / or recording of the audio signal (for example, with Play, Stop, Rec, etc. controls).
  • the adapter sends an order to the electronic device (for example, via USB) so that it can perform the corresponding action (for example, play an audio signal).
  • USB connector (105) that in addition to allowing its communication with an electronic device (to send and / or receive the digital audio signal), allows it to be electrically powered from the electronic device to which it is connected (which makes it unnecessary that the adapter has batteries or must be plugged into the mains).
  • it is a female USB connector that is type A.
  • An analog audio connector with an output amplifier buffer (108) of low impedance This allows long runs of cable at the exit without significant losses or deterioration in the signal.
  • This analog audio connector can be, for example, a Jack connector (stereo or a double mono jack). This connector allows, for example, to connect to the adapter output any external equipment to process, reproduce or record the analog signal. For example, mixers, speakers, semi-professional or professional audio installations, guitar amplifiers or other instruments ...
  • an analog audio jack for headphones with an amplifier (1 10).
  • This analog audio connector can be, for example, a stereo mini Jack connector or any other type of headphone jack.
  • the analog audio output of the codec can be directly sent to the output (through the output connectors and amplifiers 108 and 110) without any intermediate processing.
  • This embodiment is useful for example, when the adapter is used as a portable studio, used in concerts, instrument interpreters, auditorium talks etc. where an analog input signal is amplified and processed properly, for recording (and / or processing) in digital (for example, in a digital electronic device connected to that effect on the USB connector) and its high quality subsequent playback.
  • This option is especially interesting for professional musicians, who may have a greater knowledge of how they want to process the stored or transmitted sound and prefer to process it to their liking and send the already converted signal to analog directly (without opting for the output with default equalization which the Analogizer Preamplifier would provide, which will be explained below).
  • Preamplifier Analogizer To do this, the device is connected to the USB connector, the signal is converted to analog optimally and delivered to the analog output audio connectors.
  • the analog audio output of the codec is not directly sent to the output but is passed through an electronic component (preamp 107) that improves the quality of the analog output signal, returning the experience of analog sound that the user can perceive (therefore, it is said that this electronic component has an "analog" effect of the signal).
  • the bandwidth can be, for example, a frequency band between 40Hz and 16KHz (although if required for some specific application other cutoff frequencies can be chosen), this keeps the sound content within the audible spectrum.
  • Crosstalk interference in a stereo system indicates that one audio channel affects the other channel (interferes with the other).
  • This acoustic crosstalk in English Cross Talk is a phenomenon that occurs in the listening of a stereo system since a listener does not listen to a single speaker (which reproduces one of the audio channels, right and left) by each ear, but both by both ears.
  • Crosstalk is caused because each ear will not only listen to the corresponding audio channel (right for the right ear and left for the left) but also part of the other audio channel, causing distortion or interference of one channel in the other.
  • Crosstalk problems can be avoided (or at least reduced) in amplifiers using, for example, rectifiers or with separate power supplies for each channel, which is very effective.
  • a crosstalk setting between inputs is selected. (between audio channels) of for example, 40 dBs, since it is a value that allows a high signal quality, better "located” and at the same time reproduce the sound effect (sound experience) offered by traditional analog audio equipment ( allowing some crossing of the sound between the channels).
  • crosstalk setting values for example, 40 dBs, since it is a value that allows a high signal quality, better "located” and at the same time reproduce the sound effect (sound experience) offered by traditional analog audio equipment ( allowing some crossing of the sound between the channels).
  • the signal With the action of the analog preamplifier (through-band filtering and crosstalk adjustment), the signal is "analogized", giving the user the experience of a high-quality analog sound (in other words, minimizes the user's perception that the analog audio signal comes from the conversion of a digital signal). In addition, it would allow the user to better locate the sound, that is, it would not perceive it as openly but instead would focus it better on the device that is producing it (for example, a television), which greatly improves the user's listening experience.
  • a DC / DC converter (106) that converts the input voltage (the voltage with which the adapter is powered) to the output voltage of the preamp. For example, in the case shown in Figure 2, it converts voltage (109) from USB levels, (5V) to an output voltage of the preamp (107). This allows working at levels of previous professional teams despite only having the 5V supplied via USB.
  • This embodiment therefore allows to give a greater effect of analog sound to digital audio signals stored in a digital electronic device that have been converted to analog or to recover the analog sound in signals that were originally analog (for example in a concert ) that have been digitalized for recording and / or processing (for example, on an electronic device such as an iphone or a tablet) and have been reverted to analog.
  • analog audio output of the codec is directly sent to the output or that it is passed through the electronic component (preamp 107).
  • FIG. 3 This embodiment is shown in Figure 3, where an analog audio adapter system (100) is shown, which in addition to the components cited for the previous embodiment, comprises a switch (104) for selecting between a direct digital output signal (104A ) or with analog preamp (104B). In other words, it allows the user to choose between the "pure" Digital / Analog reconversion
  • All these components can be housed in the same housing (for example, a RETEX box or any other housing that allows the location of electronic components) and does not take up more than the size of a mobile phone, resulting in an external element of convenient portability.
  • a RETEX box or any other housing that allows the location of electronic components
  • the proposed adapter system can be attached to the device whose audio output is to be processed (for example a musical instrument, a microphone, a television ...), in "Stand-alone” mode (in which the adapter is external and independent of the device to which it is connected) or in "Built-in” mode (in which the adapter is integrated into the device for which you want to improve its sound).
  • the adapter can be manufactured as an isolated device or as an electronic module integrated in a musical instrument, in a computer, microphone, television, auto-radio, Home Cinema, media players, headphones, speakers, mixers and, in general , any electronic device applicable in the sound or audiovisual industry.
  • the adapter system can incorporate a module that allows the deactivation of the system (in this state, the system would do nothing with the signal but it would deliver at the output the same signal it receives at the input, that is, it would directly connect the input to the output without performing any signal processing).
  • This same module would allow its activation or start-up again (in this state it would work in the usual way described in the previous paragraphs) after being deactivated.
  • a switch between the analog input audio connector and the amplifier buffer (101) could be included in any of the embodiments of the adapter system described above. This switch would allow selecting between a first position and a second position, where the switch has an input connected to the output of the analog input audio connector of the adapter system and two outputs, a first output connected to the input of the input amplifier buffer ( 101) and a second one connected directly to the adapter output (to all analog audio connectors of the adapter system).
  • the switch input In the first position (activated position or ⁇ "), the switch input is connected to the first output, so that the buffer is connected to the analog input audio connector (usual operation, as it appears for example in the Figures 1, 2 or 3) and in the second switch position (off or "OFF" position), the switch input is connected to the second output so the input signal goes directly to the analog audio connectors of output (that is, in this second position the system will simply connect the input to the output without processing the signal).
  • the user can switch between these 2 positions by means of a button or any other external interface.
  • the adapter would be located on a pedal (in isolated mode or integrated in the pedal of the instrument to which it is connected) and the user could with the foot actuate the pedal to activate or deactivate the adapter system
  • This adapter system allows to improve the quality of an audio signal in a very simple, efficient and economical way, so it has many practical applications.
  • the instrument signal would be inserted into the adapter. This would process this signal, convert it to digital and give it (through the USB connector) to an electronic device ( ⁇ Pad, ⁇ Phone, laptop ...) where through an application (instead of expensive larger and more difficult equipment to handle) the musician can edit, mix, equalize ... and, in short, process the signal as desired.
  • This processed signal is introduced back into the adapter, which converts it into analog (it processes it to improve its analog quality if we are in case the signal passes through the "analog”) and offers it to the output.
  • the user could process the signal of his instrument easily and cheaply and obtain an optimal analog output signal.
  • a particular case of this use would be to use the adapter as an instrument amplifier:
  • the analog signal of an instrument for example a guitar
  • a ⁇ Phone through the connector USB
  • the signal returns to the adapter, converts to analog, is amplified and output through speakers connected to the adapter.
  • the analog signal of the user's voice is inserted into the adapter (by a microphone connected to it), it becomes digital, the signal is sent (via the USB connector) to a ⁇ Pad (or other device such as a smart TV, a tablet, a laptop ...) that processes it with vocal effects, etc. It also processes playback and shows us the lyrics on the screen.
  • the signal returns to the adapter, converts to analog, amplifies and outputs through speakers.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

The invention relates to a system for sound adaptation, which allows, for any audio-signal-emitting device to which it is connected, the optimum conversion of said signal, such that a high-quality audio signal is obtained at the output thereof. The system according to the invention is of low complexity, can be produced in a casing, and comprises, among other elements: converters, filters analog audio connectors, at least one USB connector for the interconnection thereof to telephones, tablets, personal computers, portable computers etc., and an amplification buffer at the input and another at the output, in order to, inter alia, couple impedances. The system provides a high-quality sound, universal interaction and connection and autonomous power supply, applicable to all types of devices, without requiring specific drivers or software.

Description

SISTEMA ADAPTADOR UNIVERSAL DE AUDIO  UNIVERSAL AUDIO ADAPTER SYSTEM
D E S C R I P C I Ó N OBJETO Y CAMPO TÉCNICO DE LA INVENCIÓN D E S C R I P C I O N OBJECT AND TECHNICAL FIELD OF THE INVENTION
La presente invención pertenece al campo técnico de los sistemas, dispositivos y elementos auxiliares para el tratamiento de señales de audio. Más concretamente, la presente invención se refiere a un sistema adaptador universal de audio que permite la captación de señales de audio, su conversión (de analógicas a digitales y/o de digitales a analógicas) y la optimización y adaptación de dichas señales para diferentes salidas de audio. Con esto, el sistema consigue una mejora muy significativa de la calidad de cualquier señal de audio que se inserte en su entrada, permitiendo a su vez, su interconexión con cualquier dispositivo de audio (de ahí su universalidad). Tiene aplicación tanto en la industria del audio profesional como en el ámbito doméstico, para el tratamiento de señales de audio de música, televisión, radio, ... y generalmente hablando, en cualquier dispositivo que requiera una mejora de la calidad de una señal de audio. El sistema incluye una interfaz estándar de Bus Universal en Serie (USB, del inglésThe present invention belongs to the technical field of systems, devices and auxiliary elements for the treatment of audio signals. More specifically, the present invention relates to a universal audio adapter system that allows the capture of audio signals, their conversion (from analog to digital and / or from digital to analog) and the optimization and adaptation of said signals for different outputs audio With this, the system achieves a very significant improvement in the quality of any audio signal that is inserted into its input, allowing, in turn, its interconnection with any audio device (hence its universality). It has application both in the professional audio industry and in the domestic field, for the treatment of audio signals from music, television, radio, ... and generally speaking, on any device that requires an improvement in the quality of a signal from Audio. The system includes a standard Serial Universal Bus (USB) interface
Universal Serial Bus) para permitir la interconexión y la interacción del sistema adaptador con dispositivos de grabación, edición y reproducción de audio (como teléfonos, tabletas, ordenadores, personales, consolas de audio, laptops, portátiles... ). Universal Serial Bus) to allow the interconnection and interaction of the adapter system with audio recording, editing and playback devices (such as phones, tablets, computers, personals, audio consoles, laptops, laptops ...).
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
En la actualidad, existen dispositivos de conversión de audio que adaptan la señal a un determinado uso, por ejemplo, para su edición y/o grabación, permitiendo la conexión de, por ejemplo, un instrumento musical a un ordenador para procesarlo mediante una aplicación de software específica, o permitir la reproducción de música contenida en los dispositivos del usuario (por ejemplo, teléfonos móviles, tabletas, etc.). Por otro lado, todos los dispositivos móviles (teléfonos, tablets, PDAs, etc.), TVs, sistemas de sonido profesionales o semi-profesionales de ámbito doméstico, etc., están diseñados pensando en la operatividad, capacidad de almacenamiento o en la imagen y los fabricantes no se han preocupado de la calidad del sonido y, desde luego no se han diseñado pensando en ámbitos donde la calidad del audio es fundamental, como por ejemplo, en la música. Sin embargo, es cada vez más evidente que estos elementos se utilizan para el ocio, siendo el sonido en general y la música elementos principales del mismo. Por ese motivo es el momento de ofrecer al usuario algo más, no sólo funcionalidad y/o capacidad de almacenamiento (a base de algoritmos de compresión que deterioran mucho el sonido final), sino también calidad sonora. At present, there are audio conversion devices that adapt the signal to a certain use, for example, for editing and / or recording, allowing the connection of, for example, a musical instrument to a computer to process it through an application of specific software, or allow the reproduction of music contained in the user's devices (for example, mobile phones, tablets, etc.). On the other hand, all mobile devices (phones, tablets, PDAs, etc.), TVs, professional or semi-professional home sound systems, etc., are designed with operational, storage capacity or image in mind. and the manufacturers have not worried about the quality of the sound and, of course, they have not been designed thinking in areas where the quality of the audio is fundamental, as for example, in the music. However, it is increasingly evident that these elements are used for leisure, with sound in general and music being its main elements. For this reason it is time to offer the user something else, not only functionality and / or storage capacity (based on compression algorithms that greatly deteriorate the final sound), but also sound quality.
Existen en el mercado herramientas de software de utilidad en el campo del audio, pero que necesitan un interface de calidad para la entrada y salida de la señal en ellas (como por ejemplo "Jam Up Pro" de amplificación virtual para dispositivos móviles fabricado por Positive Grid); también en el mercado están presentes determinados interfaces de audio de diversas marcas (como los diseñados para ¡Pad e ¡Phone) pero que tienen numerosas desventajas, ya que comprometen la calidad en pro de diseños económicos y prestaciones mínimas, proporcionan una calidad final baja, una experiencia sonora poco válida y satisfactoria, no son aplicables a otros dispositivos móviles e implican, además la descarga de software de terceros y/o continuas actualizaciones para funcionar. There are useful software tools on the market in the field of audio, but they need a quality interface for the input and output of the signal in them (such as "Jam Up Pro" virtual amplification for mobile devices manufactured by Positive Grid); Also on the market are certain audio interfaces of various brands (such as those designed for ¡Pad e ¡Phone) but they have numerous disadvantages, since they compromise the quality in favor of economic designs and minimum performance, they provide a low final quality, a sound experience that is not valid and satisfactory, they are not applicable to other mobile devices and also involve the downloading of third-party software and / or continuous updates to work.
Se citan a continuación, a modo de ejemplo, algunos documentos de patente que describen dispositivos para la conversión y adaptación de audio analógico, especialmente de señales de audio en un entorno musical, son: Some examples of patent documents describing devices for the conversion and adaptation of analog audio, especially audio signals in a musical environment, are cited below, for example:
La solicitud de patente US 2006/0048635 describe un dispositivo para la trasmisión digital del sonido producido por las cuerdas de una guitarra eléctrica. Este dispositivo está diseñado para captar la señal de las cuerdas de una guitarra de modo individual y convertirlas al dominio digital. La conversión analógico-digital se realiza dentro del propio instrumento, por lo que requiere modificaciones en el instrumento musical en sí, en este caso una guitarra eléctrica. No funciona mediante la salida habitual de la guitarra, como un amplificador tradicional, sino cuerda a cuerda. Por consiguiente, no es aplicable universalmente, sino que es una solución específica para la guitarra, diseñada especialmente para la conversión A/D (analógica-digital). En US 2008/0005411 también se describe una guitarra con un sistema diseñado para captar la señal de las cuerdas y convertirlas a dominio digital, proporcionando salida USB. Pero, al igual que en el ejemplo anterior, la conversión se realiza dentro del propio instrumento y supone modificaciones en el mismo, por lo que no es aplicable universalmente, es decir, a otros instrumentos o en general, a otros dispositivos que tengan una salida de audio. US patent application 2006/0048635 describes a device for the digital transmission of sound produced by the strings of an electric guitar. This device is designed to capture the signal from the strings of a guitar individually and convert them to the digital domain. The analog-digital conversion is done within the instrument itself, so it requires modifications to the musical instrument itself, in this case an electric guitar. It does not work through the usual output of the guitar, like a traditional amplifier, but string to string Therefore, it is not universally applicable, but is a specific solution for the guitar, specially designed for A / D (analog-digital) conversion. In US 2008/0005411 a guitar is also described with a system designed to capture the signal from the strings and convert them to digital domain, providing USB output. But, as in the previous example, the conversion is performed within the instrument itself and involves modifications to it, so it is not universally applicable, that is, to other instruments or in general, to other devices that have an output audio
Lo mismo ocurre con el instrumento de cuerda recogido en la solicitud de patente WO 2006/096465 (conocido en el mercado como iGuitar), que está diseñado para captar la señal de las cuerdas de una guitarra de modo individual y convertirlas a dominio digital, dentro del propio instrumento, pero no como un dispositivo externo que ofrezca una conexión universal a cualquier otro dispositivo con el que se pueda manejar audio. The same applies to the string instrument included in the patent application WO 2006/096465 (known in the market as iGuitar), which is designed to capture the signal of the strings of a guitar individually and convert them into digital domain, within of the instrument itself, but not as an external device that offers a universal connection to any other device with which audio can be managed.
La solicitud de patente US 201 1/0146480 describe un conector digital para guitarra y/o bajo que sirve para diferentes dispositivos portátiles de usuario, típicamente dispositivos de Apple® (¡Pad 1/2/3, ¡Phone 4 and 4S, ¡Pod de 4a generación), convirtiendo en la práctica dichos dispositivos del usuario en amplificadores de guitarra y procesadores de efectos musicales. Presenta una interfaz de entrada- salida con un preamplificador para el audio de la guitarra con ruido bajo y trabaja con un gran número de aplicaciones (apps) de guitarra virtual existentes para los dispositivos de Apple®. Dispone de un cable con un conector digital en un extremo y un conector Jack para el instrumento y un mini Jack estéreo para los cascos. Tiene un conversor tan pequeño y básico que cabe en el conector, pero esto no supone ninguna mejoría con respecto a los conversores AD/DA (analógico-digital, digital-analógico) del propio dispositivo (ej., un ¡Phone). Otra deficiencia de este conector es que no ofrece calidad profesional, ni es un dispositivo externo universal porque el cable sólo puede ser utilizado con un tipo concreto de dispositivos, ¡Phone/iPad/iPod, con conector de 30 pines. Un ejemplo más es la solicitud de patente CN 301020971 que describe un convertidor USB de guitarra, di900.Se trata de un adaptador de Jack a USB con conversión A/D para audio para conectar una guitarra o bajo directamente al ordenador. Incorpora un cable de 3.3 m con interface de audio integrado, conector Mono In de 1/4", salida para auriculares de 1/8" y entrada auxiliar de mini jack estéreo de 1/8" para reproductores Mp3, auriculares o similar. Comprende un conversor de 16 bits A/D-D/A con frecuencia de muestreo de 44.1 Khz/48Khz, y drivers de ultrabaja latencia. Sin embargo, este dispositivo tampoco ofrece sonido de calidad profesional, ni es un dispositivo externo que pueda usarse con cualquier otro dispositivo de audio, ya que el cable sólo puede ser utilizado con un tipo exclusivo de dispositivos, en este caso, ordenadores que disponen de puerto USB. Patent application US 201 1/0146480 describes a digital connector for guitar and / or bass that is used for different portable user devices, typically Apple® devices (Pad 1/2/3, Phone 4 and 4S, Pod 4 generation), becoming practice such user devices in guitar amplifiers and musical effects processors. It features an input-output interface with a preamp for low-noise guitar audio and works with a large number of existing virtual guitar applications (apps) for Apple® devices. It has a cable with a digital connector on one end and a Jack connector for the instrument and a stereo mini Jack for headphones. It has such a small and basic converter that it fits in the connector, but this does not imply any improvement with respect to the AD / DA converters (analog-digital, digital-analog) of the device itself (eg, a ¡Phone). Another shortcoming of this connector is that it does not offer professional quality, nor is it a universal external device because the cable can only be used with a specific type of device, Phone / iPad / iPod, with a 30-pin connector. A further example is the patent application CN 301020971 which describes a USB guitar converter, di900.It is a USB to A-D adapter with audio conversion to connect a guitar or bass directly to the computer. It incorporates a 3.3 m cable with integrated audio interface, 1/4 "Mono In connector, 1/8" headphone output and 1/8 "stereo mini jack auxiliary input for MP3 players, headphones or similar. a 16-bit A / DD / A converter with a sampling frequency of 44.1 Khz / 48Khz, and ultra-low latency drivers, however, this device also does not offer professional quality sound, nor is it an external device that can be used with any other device audio, since the cable can only be used with an exclusive type of devices, in this case, computers that have a USB port.
Por todo lo comentado anteriormente, existe la necesidad de un sistema que solucione los problemas de los dispositivos actualmente existentes, proporcionando un sonido de alta calidad, conexionado e interacción universal y que se puede acceder desde cualquier dispositivo conocido de audio de usuario, sin la necesidad de drivers o software específico o modificaciones en la construcción/configuración del dispositivo al que se aplica. SUMARIO DE LA INVENCIÓN For all the aforementioned, there is a need for a system that solves the problems of currently existing devices, providing high quality sound, connection and universal interaction that can be accessed from any known user audio device, without the need of drivers or specific software or modifications in the construction / configuration of the device to which it is applied. SUMMARY OF THE INVENTION
La presente invención presenta un sistema para la adaptación de audio que permite, para cualquier dispositivo al que se conecte que emita una señal de audio, convertir de manera óptima dicha señal de audio, garantizando a la salida una señal analógica de audio de gran calidad. Este sistema permite por ejemplo, convertir una señal de entrada analógica a digital para que se procese en un dispositivo externo digital y una reconversión de dicha señal digital procesada a analógica, proporcionando a la salida una señal de audio analógica de gran calidad. Además, los medios de procesamiento y conversión del sonido se organizan de forma óptima dentro del sistema. El sistema que se propone es de baja complejidad y puede fabricarse en una carcasa, preferiblemente de pequeño tamaño que permite su portabilidad. The present invention presents a system for the adaptation of audio that allows, for any device to which it is connected that emits an audio signal, to optimally convert said audio signal, guaranteeing at the output a high quality analog audio signal. This system allows, for example, to convert an analog input signal to digital so that it is processed in an external digital device and a conversion of said processed digital signal to analog, providing the output with a high quality analog audio signal. In addition, the sound processing and conversion media are optimally organized within the system. The proposed system is of low complexity and can be manufactured in a housing, preferably of a small size that allows portability.
Como ya se explicará más adelante, en una posible realización de la invención, el sistema puede incluir un componente electrónico "analogizador" (preamplificador) para mejorar la calidad de la señal analógica de salida, devolviéndole la experiencia de sonido analógico que puede percibir el usuario. Este componente adicional, funciona como un amplificador de la señal de salida de banda pasante limitada e incorpora ajuste interno de interferencias por diafonía (crosstalk, en inglés). As will be explained later, in a possible embodiment of the invention, the The system can include an electronic component "analogizer" (preamp) to improve the quality of the analog output signal, returning the experience of analog sound that the user can perceive. This additional component functions as an amplifier of the limited bandwidth output signal and incorporates internal crosstalk interference adjustment.
En otra posible realización de la invención, se puede incluir un conmutador que permita al usuario elegir entre una ruta directa (sin actuación de este componente "analogizador") y otra ruta donde la señal de audio analógica pasa por este componente "analogizador". In another possible embodiment of the invention, a switch can be included that allows the user to choose between a direct route (without actuation of this "analog" component) and another route where the analog audio signal passes through this "analog" component.
Un aspecto de la invención se refiere a un sistema adaptador de audio, caracterizado por que comprende los siguientes componentes integrados en una misma carcasa portátil: One aspect of the invention relates to an audio adapter system, characterized in that it comprises the following components integrated in the same portable housing:
- al menos un conector de audio analógico de entrada;  - at least one analog audio input connector;
- un primer buffer amplificador con impedancia variable para recibir una señal de audio analógica de entrada a través del conector de entrada,  - a first amplifier buffer with variable impedance to receive an analog audio input signal through the input connector,
- un filtro paso bajo para filtrar la señal analógica procedente del buffer amplificador,  - a low pass filter to filter the analog signal from the amplifier buffer,
- un conector USB;  - a USB connector;
- un módulo de conversión compuesto por un conversor analógico digital para convertir la señal analógica procedente del filtro paso de baja en una señal de audio digital y un conversor digital analógico para convertir una señal digital recibida a través del conector USB en una señal de audio analógica;  - a conversion module consisting of a digital analog converter to convert the analog signal from the low pass filter into a digital audio signal and an analog digital converter to convert a digital signal received through the USB connector into an analog audio signal ;
- al menos un primer conector de audio analógico de salida con un segundo buffer amplificador;  - at least a first analog output audio connector with a second amplifier buffer;
El sistema adaptador además puede comprender un segundo conector de audio analógico de salida para auriculares con un amplificador. The adapter system can also comprise a second analog audio output jack for headphones with an amplifier.
En una realización, en el sistema adaptador todos los conectores de audio analógico de salida del sistema adaptador están conectados directamente con el módulo de conversión de manera que la señal analógica de entrada de dichos conectores es la señal de audio analógica de salida del módulo de conversión. En otra realización el sistema adaptador además comprende: In one embodiment, in the adapter system all the analog output audio connectors of the adapter system are directly connected to the conversion module so that the analog input signal of said connectors is the analog output audio signal of the conversion module. . In another embodiment the adapter system further comprises:
- un preamplificador analógico que comprende un filtro paso banda y medios de ajuste de diafonía, conectado a la salida del módulo de conversión;  - an analog preamplifier comprising a bandpass filter and crosstalk adjustment means, connected to the output of the conversion module;
- un convertidor DC/DC para convertir la tensión de alimentación del sistema a la tensión del preamplificador; donde todos los conectores de audio analógico de salida del sistema adaptador están conectados con una salida del preamplificador analógico.  - a DC / DC converter to convert the system supply voltage to the preamp voltage; where all the analog audio connectors of the adapter system are connected to an analog preamp output.
En otra realización el sistema adaptador además comprende: In another embodiment the adapter system further comprises:
- un preamplificador analógico que comprende un filtro paso banda y medios de ajuste de diafonía, donde todos los conectores de audio analógico de salida están conectados con la salida del preamplificador analógico;  - an analog preamplifier comprising a bandpass filter and crosstalk adjustment means, where all analog audio output connectors are connected to the analog preamp output;
- un convertidor DC/DC para convertir la tensión de alimentación del sistema a la tensión del preamplificador;  - a DC / DC converter to convert the system supply voltage to the preamp voltage;
- un conmutador para seleccionar entre una primera posición y una segunda posición, donde el conmutador tiene una entrada conectada a una salida del módulo de conversión y dos salidas, una primera salida conectada a todos los conectores de audio analógicos de salida del sistema adaptador y una segunda salida conectada a la entrada del preamplificador analógico, y donde en la primer posición del conmutador, la entrada del conmutador queda conectada con la primera salida de manera que la señal analógica de entrada de dichos conectores de salida es la señal de audio analógica de salida del módulo de conversión y en la segunda posición del conmutador, la entrada del conmutador queda conectada con la segunda salida por lo que el preamplificador analógico queda conectado a la salida del módulo de conversión, es decir, la señal analógica de entrada de dicho preamplificador es la señal de audio analógica de salida del módulo de conversión.  - a switch to select between a first position and a second position, where the switch has an input connected to an output of the conversion module and two outputs, a first output connected to all analog output audio connectors of the adapter system and a second output connected to the analog preamp input, and where in the first switch position, the switch input is connected to the first output so that the analog input signal of said output connectors is the analog audio output signal of the conversion module and in the second position of the switch, the input of the switch is connected to the second output so that the analog preamplifier is connected to the output of the conversion module, that is, the analog input signal of said preamplifier is The analog audio signal output of the conversion module.
El preamplificador analógico puede operar en una banda de frecuencias entre 40Hz y 16KHz y/o puede realizar un ajuste de diafonías entre canales de entrada de 40dBs. The analog preamp can operate in a frequency band between 40Hz and 16KHz and / or can perform a crosstalk adjustment between 40dBs input channels.
En una realización el segundo buffer amplificador es de baja impedancia. El filtro paso bajo puede tener una frecuencia de corte de 20KHz. En una realización el primer amplificador es de impedancia variable en un rango entre 4,7 kQ y 1 ΜΩ. In one embodiment the second amplifier buffer is low impedance. The low pass filter can have a cutoff frequency of 20KHz. In one embodiment the first amplifier is of variable impedance in a range between 4.7 kQ and 1 Ω.
En una realización el módulo de conversión está integrado en un códec compatible con interfaces HID. In one embodiment the conversion module is integrated in a codec compatible with HID interfaces.
En una realización, los conectores de audio analógico son conectores tipo Jack. In one embodiment, the analog audio connectors are Jack type connectors.
El sistema adaptador puede estar conectado exteriormente a un dispositivo electrónico de terceras partes o puede estar integrado en dicho dispositivo electrónico (donde el dispositivo electrónico es un instrumento musical, un equipo de televisión, una radio, un ordenador, un micrófono, un reproductor multimedia, home cinema, auriculares, altavoces, mesa de mezclas o cualquier dispositivo electrónico de audio o audiovisual). The adapter system may be externally connected to a third-party electronic device or it may be integrated into said electronic device (where the electronic device is a musical instrument, a television set, a radio, a computer, a microphone, a media player, home cinema, headphones, speakers, mixing console or any electronic audio or audiovisual device).
En una realización, el sistema adaptador podría estar ubicado en un pedal, bien porque el sistema se fabrique (la carcasa) en forma de pedal o por estar integrado en el pedal del dispositivo electrónico al que está conectado, como el pedal de una guitarra o de cualquier otro instrumento o dispositivo. In one embodiment, the adapter system could be located on a pedal, either because the system is manufactured (the housing) in the form of a pedal or because it is integrated into the pedal of the electronic device to which it is connected, such as the pedal of a guitar or of any other instrument or device.
En una realización, el sistema adaptador es compatible con interfaces HID e incluye uno o más controles incorporados en el sistema, mediante los cuales el usuario puede interactuar con un dispositivo electrónico al que el sistema está conectado. Las principales ventajas de la invención son, entre otras: In one embodiment, the adapter system is compatible with HID interfaces and includes one or more controls incorporated in the system, by which the user can interact with an electronic device to which the system is connected. The main advantages of the invention are, among others:
Simplicidad: La sencillez en la fabricación del adaptador permite que tenga un coste asequible. Además, al no exigir una configuración compleja por parte del usuario (simplemente conectar su dispositivo) es muy fácil de usar. Estos 2 factores pueden dar lugar a una mayor accesibilidad del sonido de alta calidad (como ha ocurrido con el vídeo) hasta ahora sólo alcanzable con equipos de audio profesional (muchos más caros y complejos), poniendo la máxima calidad de sonido al alcance de todos y de manera muy simple y no sólo de unos pocos entendidos o audiófilos. Simplicity: Simplicity in the manufacture of the adapter allows it to have an affordable cost. In addition, not requiring a complex configuration by the user (simply connect your device) is very easy to use. These 2 factors can lead to greater accessibility of high quality sound (as has happened with the video) so far only achievable with professional audio equipment (many more expensive and complex), putting maximum sound quality within everyone's reach and very simply and not just a few understood or audiophiles.
- Auto-alimentación: El adaptador no necesita ni tener baterías o enchufarlo a una toma de la red eléctrica, ya que puede autoalimentarse (del dispositivo electrónico que se le conecte) a través de la conexión USB. - Self-power: The adapter does not need to have batteries or plug it into an outlet on the mains, since it can be self-powered (from the electronic device that is connected to it) through the USB connection.
Universalidad: El sistema puede aplicarse a, prácticamente, cualquier dispositivo de manejo del audio. Además, con su interfaz de salida USB puede conectarse a cualquier dispositivo sin modificaciones y sin adaptadores, alimentándose del mismo. Además, la conexión entre el dispositivo y el adaptador puede realizarse a través de un cable standard (USB o de carga del dispositivo externo) y sin la necesidad de hardware o software específico. Universality: The system can be applied to virtually any audio handling device. In addition, with its USB output interface you can connect to any device without modifications and without adapters, feeding on it. In addition, the connection between the device and the adapter can be made through a standard cable (USB or external device charging) and without the need for specific hardware or software.
Sin embargo es compatible con software de terceros que pueda estar instalado en el dispositivo que esté conectado mediante el USB (un ordenador, Iphone, Ipad etc). Es decir existe la posibilidad de que la señal se procese en estos dispositivos mediante software de terceros, para luego ser enviada de nuevo al adaptador para su reconversión a analógico.  However, it is compatible with third-party software that may be installed on the device that is connected via USB (a computer, Iphone, Ipad etc). In other words, there is the possibility that the signal is processed in these devices by third-party software, and then sent back to the adapter for conversion to analog.
- Versatilidad: Aprovechando que los dispositivos móviles de usuario (teléfonos inteligentes, tabletas, PDAs, etc.) ya están incorporados en nuestro día a día, la presente invención, que es aplicable a cualquiera de estos dispositivos del usuario, permite maximizar el potencial de tales dispositivos, sin modificaciones en los mismos, para que puedan ofrecer un sonido profesional y orgánico de alta calidad, al igual que actualmente muchos ya están ofreciendo una calidad de imagen en fotografía y vídeo de alta definición. Asimismo, puede integrarse en instrumentos musicales y otros sistemas que manejan sonido que se desea de calidad profesional: televisores, radios, etc. - Versatility: Taking advantage of the fact that mobile user devices (smartphones, tablets, PDAs, etc.) are already incorporated into our day-to-day life, the present invention, which is applicable to any of these user devices, maximizes the potential of such devices, without modifications in them, so that they can offer a professional and organic sound of high quality, just as many are currently offering an image quality in high definition photography and video. Likewise, it can be integrated into musical instruments and other systems that handle the desired sound of professional quality: televisions, radios, etc.
Para un entendimiento más completo de estos y otros aspectos de la invención, sus objetos y ventajas, puede tenerse referencia a la siguiente memoria descriptiva y a los dibujos adjuntos. DESCRIPCIÓN DE LOS DIBUJOS For a more complete understanding of these and other aspects of the invention, its objects and advantages, reference may be made to the following specification and The attached drawings. DESCRIPTION OF THE DRAWINGS
Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con unos ejemplos preferentes de realizaciones prácticas de la misma, se acompaña como parte integrante de esta descripción un juego de dibujos en donde, con carácter ilustrativo y no limitativo, se ha representado lo siguiente: To complement the description that is being made and in order to help a better understanding of the features of the invention, in accordance with some preferred examples of practical embodiments thereof, a set of drawings is accompanied as an integral part of this description. where, for illustrative and non-limiting purposes, the following has been represented:
La figura 1 muestra un diagrama de bloques de la arquitectura del adaptador de audio analógico, de acuerdo a una realización de la invención. Figure 1 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
La figura 2 muestra un diagrama de bloques de la arquitectura del adaptador de audio analógico, de acuerdo a una realización de la invención. Figure 2 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
La figura 3 muestra un diagrama de bloques de la arquitectura del adaptador de audio analógico, de acuerdo a una realización de la invención. Figure 3 shows a block diagram of the architecture of the analog audio adapter, according to an embodiment of the invention.
DESCRIPCIÓN DETALLADA DE LA INVENCIÓN DETAILED DESCRIPTION OF THE INVENTION
La presente invención propone un sistema para la adaptación de sonido que permite, para cualquier dispositivo al que se conecte que emita una señal de audio, convertir de manera óptima dicha señal, de manera que se obtenga una señal de audio a su salida de gran calidad. The present invention proposes a system for the adaptation of sound that allows, for any device to which it is connected that emits an audio signal, to optimally convert said signal, so that a high quality audio signal is obtained at its output. .
Este sistema adaptador, puede trabajar con una señal de audio analógico en su entrada (que recibe desde un dispositivo a través por ejemplo de un conector de audio analógico). El dispositivo al que se conecta el sistema adaptador para recibir la señal de audio analógica, puede ser un micrófono, un instrumento musical, un equipo de reproducción de sonido... y en general cualquier dispositivo capaz de generar una señal de audio analógica. Esta señal se procesa y se convierte de manera óptima a una señal digital y, mediante un conector USB, puede descargarse esta señal en un dispositivo electrónico (teléfono, tableta, ordenador etc.) para su proceso (grabarla, editarla, mezclarla... ). La señal de audio digital es reenviada al adaptador que la reconvierte a analógica de manera óptima para ofrecer a la salida una señal de audio analógica de gran calidad. Esto permite grabar o procesar la señal en digital (en el dispositivo electrónico externo) a gusto del usuario, apoyándose en este caso en software de procesamiento y/o grabación de terceros (instalado en el dispositivo electrónico externo). Esta opción es muy útil por ejemplo para profesionales de la música. This adapter system can work with an analog audio signal at its input (which it receives from a device through for example an analog audio connector). The device to which the adapter system is connected to receive the analog audio signal can be a microphone, a musical instrument, a sound reproduction device ... and in general any device capable of generating an analog audio signal. This signal is processed and converted optimally to a digital signal and, through a USB connector, this signal can be downloaded to an electronic device (phone, tablet, computer etc.) for its process (record it, edit it, mix it ...). The digital audio signal is forwarded to the adapter that converts it to analog in an optimal way to offer a high quality analog audio signal to the output. This allows the digital signal to be recorded or processed (on the external electronic device) to the user's liking, relying on third-party processing and / or recording software (installed on the external electronic device). This option is very useful for example for music professionals.
Asimismo el sistema adaptador puede recibir, a través del conector USB, una señal procedente de un dispositivo electrónico (por ejemplo, una canción en formato mp3 o en general cualquier señal de audio almacenada en el dispositivo en cualquier formato digital), la reconvierte a analógica y la procesa para ofrecer a la salida una señal de audio analógica de gran calidad. El dispositivo electrónico al que se conecta el adaptador mediante el conector USB (para enviarle y/o recibir una señal de audio digital) puede ser cualquier dispositivo electrónico capaz de manejarAlso the adapter system can receive, through the USB connector, a signal from an electronic device (for example, a song in mp3 format or in general any audio signal stored in the device in any digital format), converts it to analog and processes it to offer a high quality analog audio signal at the output. The electronic device to which the adapter is connected via the USB connector (to send and / or receive a digital audio signal) can be any electronic device capable of handling
(procesar) audio en digital. Así, por ejemplo el adaptador es compatible con teléfonos inteligentes, reproductores Mp3, ordenadores (Mac o PC), portátiles, televisores digitales, tabletas y, en general, cualquier dispositivo susceptible de conectarse a través de USB, sin necesidad de ningún software específico (en caso de que el dispositivo al que se conecta el adaptador necesite actualizar su propio software, lo hace de modo automático; el adaptador propuesto no interfiere). (process) digital audio. Thus, for example, the adapter is compatible with smartphones, MP3 players, computers (Mac or PC), laptops, digital TVs, tablets and, in general, any device capable of connecting via USB, without the need for any specific software ( in case the device to which the adapter is connected needs to update its own software, it does so automatically; the proposed adapter does not interfere).
Para realizar estas funciones, el adaptador consta de distintos elementos o componentes electrónicos. En la Figura 1 puede observarse una realización preferente de la invención, en la que se presenta un sistema adaptador (100) de audio analógico, que comprende los siguientes componentes electrónicos: To perform these functions, the adapter consists of different electronic elements or components. A preferred embodiment of the invention can be seen in Figure 1, in which an analog audio adapter system (100) is presented, comprising the following electronic components:
Un búffer amplificador de entrada (101) con impedancia variable (para poder adaptarse a distintos tipos de señal de audio analógico) que amplifica la señal analógica de entrada. El rango de impedancia del amplificador puede ser por ejemplo, de entre 4,7 kQ y 1 ΜΩ. La actuación de este amplificador, permite que se introduzca cualquier señal de audio en el adaptador con garantías de una conversión posterior óptima, permitiendo que se capten todo el rango de sonidos y matices de la señal audio de entrada (por ejemplo, si es una señal procedente de un concierto van a poderse percibir todo el rango de sonidos y matices de los distintos instrumentos). An input amplifier buffer (101) with variable impedance (to adapt to different types of analog audio signal) that amplifies the analog input signal. The amplifier impedance range can be, for example, between 4.7 kQ and 1 Ω. The performance of this amplifier allows any audio signal to be introduced into the adapter with guarantees of an optimal subsequent conversion, allowing the full range of sounds to be captured and nuances of the audio input signal (for example, if it is a signal from a concert, the entire range of sounds and nuances of the different instruments can be perceived).
Este búfer recibe la señal analógica de un dispositivo que se conecte a la entrada del adaptador, para ello el adaptador tendrá al menos un conector de audio analógico de entrada, tipo Jack o de cualquier otro tipo, que le permitirá recibir una señal de audio analógica del dispositivo (por ejemplo, de instrumentos musicales eléctricos que dispongan de conector Jack, de micrófonos etc.).  This buffer receives the analog signal from a device that connects to the input of the adapter, for this the adapter will have at least one analog input audio jack, Jack type or any other type, which will allow you to receive an analog audio signal of the device (for example, of musical musical instruments that have a Jack connector, microphones etc.).
Por supuesto, puede haber más de un conector de entrada, lo que permitiría por ejemplo conectar dos o más dispositivos (y por lo tanto recibir dos o más señales de audio analógicas). Normalmente el número de entradas se limita a dos, ya que es la cantidad de señales que puede manejar el conector USB al que se le entregan estas señales posteriormente una vez digitalizadas (como veremos más adelante). No es lo mismo convertir a digital música ya grabada, que está procesada y llega casi toda la pieza con el mismo nivel, que convertir a digital la ejecución directa de un intérprete en un instrumento musical, llena de matices, intensidades y dinámicas. Este búfer de impedancia variable, va a permitir que la señal del instrumento (o de varios instrumentos si se trata de un concierto, o en general, la señal de audio analógica que se introduce en el adaptador) se traslade al ámbito electrónico de modo y manera que respeta sus cualidades sonoras, la ejecución del músico y en general, la experiencia interpretativa. Of course, there may be more than one input connector, which would allow for example to connect two or more devices (and therefore receive two or more analog audio signals). Normally the number of inputs is limited to two, since it is the amount of signals that can be handled by the USB connector to which these signals are subsequently delivered once digitized (as we will see later). It is not the same to convert to digital music already recorded, which is processed and almost the whole piece arrives with the same level, than to convert the direct performance of an interpreter into a musical instrument, full of nuances, intensities and dynamics. This variable impedance buffer, will allow the signal of the instrument (or of several instruments if it is a concert, or in general, the analog audio signal that is introduced in the adapter) to be transferred to the electronic environment so and way that respects his sonic qualities, the musician's performance and in general, the interpretive experience.
Un filtro paso bajo (102) que filtra la señal analógica procedente del buffer amplificador (101), descartando frecuencias que estén fuera del espectro audible. Como el espectro audible humano suele abarcar frecuencias de entre 20 Hz y 20kHz, una frecuencia de corte puede ser por ejemplo de 20KhZ (aunque si se requiere para alguna aplicación concreta se puede elegir otras frecuencias de corte). Con esto se consigue reducir la cantidad de información que hay que procesar posteriormente sin perder calidad auditiva alguna (ya que se descarta parte de la señal que no iba a ser percibida por el oído humano), se eliminan futuras interferencias que puede provocar la parte del espectro no audible y se mejora al mismo tiempo la relación señal/ruido al reducir el ruido (la parte de la señal que está fuera del espectro audible). Además al "recortar" así la señal (quitando el espectro no audible), se evita que se tengan que hacer recortes posteriores en la señal que sí podrían afectar a la calidad percibida. A low pass filter (102) that filters the analog signal from the amplifier buffer (101), discarding frequencies that are outside the audible spectrum. As the human audible spectrum usually covers frequencies between 20 Hz and 20 kHz, a cutoff frequency can be for example 20KhZ (although if it is required for a specific application other cutoff frequencies can be chosen). With this it is possible to reduce the amount of information that must be processed later without losing any auditory quality (since it is discarded part of the signal that was not to be perceived by the human ear), future interference that the part of the non-audible spectrum can cause is eliminated and at the same time the signal / noise ratio is improved by reducing the noise (the part of the signal which is outside the audible spectrum). In addition to "trimming" the signal in this way (removing the non-audible spectrum), it is avoided that subsequent cuts have to be made in the signal that could affect the perceived quality.
Un módulo o dispositivo de conversión (por ejemplo, un códec) con conversores analógico digital y digital analógico (103) que realiza la conversión de una señal de audio analógica en una señal de audio digital (en una etapa de pre-proceso) y/o de una digital a una analógica (en una etapa de post proceso), de manera óptima. Estos conversores serán de alta gama, ambos dispuestos con el fin de garantizar una conversión óptima y una mejor experiencia sonora. Es decir, son conversones de mucha mayor calidad y prestaciones que las que pueden ofrecer los conversores A/D incluidos en dispositivos electrónicos (por ejemplo, los conversores incluidos en los "smart phones"). A conversion module or device (for example, a codec) with analog digital and analog digital converters (103) that converts an analog audio signal into a digital audio signal (at a pre-process stage) and / or from a digital to an analog (in a post process stage), optimally. These converters will be high-end, both arranged in order to guarantee an optimal conversion and a better sound experience. That is, they are conversones of much higher quality and performance than those offered by the A / D converters included in electronic devices (for example, the converters included in the "smart phones").
Este módulo tiene una interfaz con un conector USB que le permite enviar y recibir señales de audio digital a un dispositivo electrónico (teléfonos inteligentes, reproductores Mp3, ordenadores Mac o PC, Ipads, Iphones, Ipods, teléfonos Androids, portátiles, tabletas, televisores digitales y, en general, cualquier dispositivo susceptible de conectarse a través de USB).  This module has an interface with a USB connector that allows you to send and receive digital audio signals to an electronic device (smartphones, MP3 players, Mac or PC computers, Ipads, Iphones, Ipods, Androids phones, laptops, tablets, digital TVs and, in general, any device capable of connecting via USB).
Como se ha indicado anteriormente, este módulo realiza 2 tipos de conversiones:  As indicated above, this module performs 2 types of conversions:
Por un lado convierte de manera óptima una señal analógica (procedente del filtro paso bajo) a digital. Esta señal digital se envía al dispositivo electrónico digital (cualquiera de los mencionados anteriormente) conectado al adaptador a través del conector USB (105) para su proceso (grabarla, editarla, mezclarla... ) en dicho dispositivo. La señal de audio digital una vez procesada puede ser reenviada otra vez al adaptador (mediante el conector USB) para su (re) conversión a analógica. On the one hand it optimally converts an analog signal (from the low pass filter) to digital. This digital signal is sent to the digital electronic device (any of those mentioned above) connected to the adapter through the USB connector (105) for processing (record, edit, mix ...) on that device. Once the digital audio signal is processed, it can be sent back to the adapter (via the USB connector) for (re) conversion to analogue
Por otro lado, el códec convierte de manera óptima una señal digital procedente del dispositivo electrónico (recibida a través del conector USB) a analógica para continuar su procesado en el adaptador. Esta señal digital recibida en el códec, puede ser la señal digital descrita en el párrafo anterior (resultado de procesar en el dispositivo electrónico digital, la señal previamente convertida de analógica a digital en el adaptador) o puede ser cualquier señal de audio digital almacenada en el dispositivo electrónico (conectado al adaptador a través del conector USB) y que el usuario desea convertir a analógica.  On the other hand, the codec optimally converts a digital signal from the electronic device (received through the USB connector) to analog to continue processing on the adapter. This digital signal received in the codec, can be the digital signal described in the previous paragraph (result of processing in the digital electronic device, the previously converted signal from analog to digital in the adapter) or it can be any digital audio signal stored in the electronic device (connected to the adapter through the USB connector) and that the user wishes to convert to analog.
Este módulo puede ser compatible con interfaces de usuario HID (dispositivos de interfaz humana, del inglés Human Interface Device). El sistema adaptador puede incluir controles incorporados para comunicarse e interactuar con el dispositivo electrónico, por ejemplo, para la reproducción y/o grabación de la señal de audio (por ejemplo, con controles Play, Stop, Rec, etc.). Así cuando el usuario pulsa uno de estos controles (por ejemplo, el Play) el adaptador envía una orden al dispositivo electrónico (por ejemplo a través del USB) para que éste realice la acción correspondiente (por ejemplo reproducir una señal de audio). This module can be compatible with HID user interfaces (Human Interface Devices). The adapter system may include built-in controls to communicate and interact with the electronic device, for example, for the reproduction and / or recording of the audio signal (for example, with Play, Stop, Rec, etc. controls). Thus, when the user presses one of these controls (for example, Play), the adapter sends an order to the electronic device (for example, via USB) so that it can perform the corresponding action (for example, play an audio signal).
- Un conector USB (105) que además de permitir su comunicación con un dispositivo electrónico (para enviar y/o recibir la señal de audio digital), le permite alimentarse eléctricamente del dispositivo electrónico al que se conecta (lo que hace que no sea necesario que el adaptador tenga baterías o haya que enchufarlo a la red eléctrica). En una realización se trata de un conector USB hembra que es tipo A. - A USB connector (105) that in addition to allowing its communication with an electronic device (to send and / or receive the digital audio signal), allows it to be electrically powered from the electronic device to which it is connected (which makes it unnecessary that the adapter has batteries or must be plugged into the mains). In one embodiment it is a female USB connector that is type A.
- Un conector de audio analógico con un buffer amplificador de salida (108) de baja impedancia. Lo que permite tiradas largas de cable a la salida sin pérdidas ni deterioro apreciables en la señal. Este conector de audio analógico puede ser por ejemplo, un conector Jack (estéreo o un doble Jack mono). Este conector permite por ejemplo, conectar a la salida del adaptador cualquier equipo externo para procesar, reproducir o grabar la señal analógica. Por ejemplo, mesas de mezclas, altavoces, instalaciones audio semi-profesionales o profesionales, amplificadores de guitarra u otros instrumentos... - An analog audio connector with an output amplifier buffer (108) of low impedance. This allows long runs of cable at the exit without significant losses or deterioration in the signal. This analog audio connector can be, for example, a Jack connector (stereo or a double mono jack). This connector allows, for example, to connect to the adapter output any external equipment to process, reproduce or record the analog signal. For example, mixers, speakers, semi-professional or professional audio installations, guitar amplifiers or other instruments ...
- Adicionalmente, puede tener un conector de audio analógico para auriculares con un amplificador (1 10). Este conector de audio analógico puede ser por ejemplo, un conector mini Jack estéreo o cualquier otro tipo de conector para auriculares. - Additionally, you can have an analog audio jack for headphones with an amplifier (1 10). This analog audio connector can be, for example, a stereo mini Jack connector or any other type of headphone jack.
En una realización (como se puede ver en la figura 1), la salida de audio analógica del códec puede ser directamente enviada a la salida (a través de los conectores y amplificadores de salida 108 y 110) sin ningún procesado intermedio. In one embodiment (as can be seen in Figure 1), the analog audio output of the codec can be directly sent to the output (through the output connectors and amplifiers 108 and 110) without any intermediate processing.
Esta realización es útil por ejemplo, cuando se usa el adaptador como un estudio portátil, empleado en conciertos, interpretes de instrumentos, charlas en auditorios etc. donde una señal de entrada analógica se amplifica y procesa adecuadamente, para su grabación (y/o procesado) en digital (por ejemplo, en un dispositivo electrónico digital conectado a tal efecto en el conector USB) y su reproducción posterior de alta calidad. Esta opción es especialmente interesante para los músicos profesionales, que pueden tener un mayor conocimiento de cómo quieren procesar el sonido almacenado o transmitido y prefieren procesarlo ellos a su gusto y enviar la señal ya convertida a analógico directamente (sin optar por la salida con ecualización predeterminada que proporcionaría el Preamplificador Analogizador, que se explicará a continuación). This embodiment is useful for example, when the adapter is used as a portable studio, used in concerts, instrument interpreters, auditorium talks etc. where an analog input signal is amplified and processed properly, for recording (and / or processing) in digital (for example, in a digital electronic device connected to that effect on the USB connector) and its high quality subsequent playback. This option is especially interesting for professional musicians, who may have a greater knowledge of how they want to process the stored or transmitted sound and prefer to process it to their liking and send the already converted signal to analog directly (without opting for the output with default equalization which the Analogizer Preamplifier would provide, which will be explained below).
O cuando se quiere reproducir de manera analógica y con alta calidad, una señal de audio almacenada digitalmente en un dispositivo electrónico digital pero, por cualquier motivo, no se desea la ecualización predeterminada que proporcionaría elOr when you want to reproduce an audio signal stored digitally in a digital electronic device in analogue and with high quality but, for any reason, you do not want the default equalization that would provide the
Preamplificador Analogizador. Para ello, se conecta dicho dispositivo al conector USB, se convierte la señal a analógica de forma óptima y se entrega a los conectores de audio analógicos de salida. En otra realización, la salida de audio analógica del códec no es directamente enviada a la salida sino que se le hace pasar por un componente electrónico (preamplificador 107) que mejora la calidad de la señal analógica de salida, devolviéndole la experiencia de sonido analógico que puede percibir el usuario (por eso, se dice que este componente electrónico tiene un efecto "analogizador" de la señal). Preamplifier Analogizer. To do this, the device is connected to the USB connector, the signal is converted to analog optimally and delivered to the analog output audio connectors. In another embodiment, the analog audio output of the codec is not directly sent to the output but is passed through an electronic component (preamp 107) that improves the quality of the analog output signal, returning the experience of analog sound that the user can perceive (therefore, it is said that this electronic component has an "analog" effect of the signal).
En la Figura 2 puede observarse esta realización de la invención, en la que el sistema adaptador (100) de audio analógico además de los componentes citados para la realización anterior, comprende los siguientes componentes electrónicos: In Figure 2, this embodiment of the invention can be seen, in which the analog audio adapter system (100) in addition to the components mentioned for the previous embodiment, comprises the following electronic components:
Un preamplificador analógico (107), con banda pasante limitada y ajuste de diafonía (en inglés "crosstalk"). La banda pasante puede ser, por ejemplo, una banda de frecuencias entre 40Hz y 16KHz (aunque si se requiere para alguna aplicación concreta se puede elegir otras frecuencias de corte), con esto se mantiene el contenido sonoro dentro del espectro audible. An analog preamplifier (107), with limited thru band and crosstalk adjustment (in English "crosstalk"). The bandwidth can be, for example, a frequency band between 40Hz and 16KHz (although if required for some specific application other cutoff frequencies can be chosen), this keeps the sound content within the audible spectrum.
La interferencia por diafonía en un sistema estéreo (también conocida como diafonía acústica o simplemente como diafonía) indica que un canal de audio afecta al otro canal (interfiere en el otro). Esta diafonía acústica (en inglés Cross Talk) es un fenómeno que ocurre en la escucha de un sistema estéreo ya que un oyente no escucha un solo altavoz (que reproduce uno de los canales de audio, derecho e izquierdo) por cada oído, sino ambos por ambos oídos. La diafonía es causada porque cada oído no sólo escuchará el canal de audio que le corresponde (derecho para el oído derecho e izquierdo para el izquierdo) sino también parte del otro canal de audio, produciéndose una distorsión o interferencia de una canal en el otro. Los problemas de diafonía se pueden evitar (o al menos reducir) en los amplificadores usando, por ejemplo, rectificadores o con fuentes de alimentación independientes para cada canal, lo que resulta muy efectivo. Crosstalk interference in a stereo system (also known as acoustic crosstalk or simply as crosstalk) indicates that one audio channel affects the other channel (interferes with the other). This acoustic crosstalk (in English Cross Talk) is a phenomenon that occurs in the listening of a stereo system since a listener does not listen to a single speaker (which reproduces one of the audio channels, right and left) by each ear, but both by both ears. Crosstalk is caused because each ear will not only listen to the corresponding audio channel (right for the right ear and left for the left) but also part of the other audio channel, causing distortion or interference of one channel in the other. Crosstalk problems can be avoided (or at least reduced) in amplifiers using, for example, rectifiers or with separate power supplies for each channel, which is very effective.
En esta realización, se selecciona un ajuste de diafonía entre entradas (entre canales de audio) de por ejemplo, 40 dBs, ya que es un valor que permite una calidad de señal alta, mejor "ubicada" y a la vez reproducir el efecto sonoro (experiencia sonora) que ofrecen los equipos analógicos tradicionales de audio (permitiendo cierto cruce del sonido entre los canales). Aunque, por supuesto, si se requiere para alguna aplicación concreta se puede elegir otros valores del ajuste de diafonía. In this embodiment, a crosstalk setting between inputs is selected. (between audio channels) of for example, 40 dBs, since it is a value that allows a high signal quality, better "located" and at the same time reproduce the sound effect (sound experience) offered by traditional analog audio equipment ( allowing some crossing of the sound between the channels). Although, of course, if it is required for a specific application you can choose other crosstalk setting values.
Con la acción del preamplificador analógico (filtrado de banda pasante y ajuste de diafonía) se consigue "analogizar" la señal, devolviéndole al usuario la experiencia de un sonido analógico de alta calidad (en otras palabras, minimiza la percepción por parte del usuario de que la señal de audio analógica proviene de la conversión de una señal digital). Además permitiría al usuario ubicar mejor el sonido, es decir, no lo percibiría tan abierto sino que lo enfocaría mejor en el dispositivo que lo está produciendo (por ejemplo, una televisión), lo cual mejora mucho la experiencia auditiva del usuario. With the action of the analog preamplifier (through-band filtering and crosstalk adjustment), the signal is "analogized", giving the user the experience of a high-quality analog sound (in other words, minimizes the user's perception that the analog audio signal comes from the conversion of a digital signal). In addition, it would allow the user to better locate the sound, that is, it would not perceive it as openly but instead would focus it better on the device that is producing it (for example, a television), which greatly improves the user's listening experience.
Un convertidor DC/DC (106) que convierte la tensión de entrada (la tensión con la que se alimenta el adaptador) a la tensión de salida del preamplificador. Por ejemplo, en el caso mostrado en la figura 2, convierte tensión (109) de niveles de USB, (5V) a una tensión de salida del preamplificador (107). Esto permite trabajar a niveles de equipos previos profesionales a pesar de sólo disponer de los 5V suministrados vía USB. A DC / DC converter (106) that converts the input voltage (the voltage with which the adapter is powered) to the output voltage of the preamp. For example, in the case shown in Figure 2, it converts voltage (109) from USB levels, (5V) to an output voltage of the preamp (107). This allows working at levels of previous professional teams despite only having the 5V supplied via USB.
Esta realización permite por lo tanto, darle un efecto mayor de sonido analógico a señales de audio digitales almacenadas en un dispositivo electrónico digital que han sido convertidas a analógicas o bien para recuperar el sonido analógico en señales que originalmente eran analógicas (por ejemplo en un concierto) que se han pasado a digital para su grabación y/o procesado (por ejemplo, en un dispositivo electrónico como un iphone o una tableta) y se han vuelto a pasar a analógicas. This embodiment therefore allows to give a greater effect of analog sound to digital audio signals stored in a digital electronic device that have been converted to analog or to recover the analog sound in signals that were originally analog (for example in a concert ) that have been digitalized for recording and / or processing (for example, on an electronic device such as an iphone or a tablet) and have been reverted to analog.
Sin embargo, puede haber situaciones y/o aplicaciones concretas donde el usuario quiera ese efecto adicional de sonido más analógico (efecto "analogizador") y otras en que esto no le interese. Para ello, en otra realización, existe un conmutador que permite al usuario elegir entre que la salida de audio analógica del códec sea directamente enviada a la salida o que se le haga pasar por el componente electrónico (preamplificador 107). However, there may be specific situations and / or applications where the user wants that additional more analog sound effect ("analog" effect) and other That this does not interest you. For this, in another embodiment, there is a switch that allows the user to choose whether the analog audio output of the codec is directly sent to the output or that it is passed through the electronic component (preamp 107).
Esta realización se muestra en la figura 3, donde se muestra un sistema adaptador (100) de audio analógico, que además de los componentes citados para la realización anterior, comprende un conmutador (104) para seleccionar entre una señal de salida digital directa (104A) o con preamplificación analógica (104B). Es decir permite al usuario elegir entre la reconversión Digital/Analógica "pura"This embodiment is shown in Figure 3, where an analog audio adapter system (100) is shown, which in addition to the components cited for the previous embodiment, comprises a switch (104) for selecting between a direct digital output signal (104A ) or with analog preamp (104B). In other words, it allows the user to choose between the "pure" Digital / Analog reconversion
(conexión directa entre el códec (103) y los conectores de salida) o de la reconversión "analogizada" (la salida del códec (103) pasa por el preamplificador (107)) permitiéndole al usuario disfrutar de la experiencia de volver a escuchar la música analógica (recuperando el sonido de los equipos tradicionales de audio analógicos). (direct connection between the codec (103) and the output connectors) or the "analog" conversion (the codec output (103) goes through the preamp (107)) allowing the user to enjoy the experience of listening again to the analog music (recovering the sound of traditional analog audio equipment).
Todos estos componentes pueden estar alojados en una misma carcasa (por ejemplo, una caja RETEX o cualquier otra carcasa que permita la ubicación de componentes electrónicos) y no ocupa más que el tamaño de un teléfono móvil, por lo que resulta en un elemento externo de cómoda portabilidad. All these components can be housed in the same housing (for example, a RETEX box or any other housing that allows the location of electronic components) and does not take up more than the size of a mobile phone, resulting in an external element of convenient portability.
El sistema adaptador propuesto puede acoplarse al dispositivo cuya salida de audio se quiere procesar (por ejemplo un instrumento musical, un micrófono, una televisión... ), en modo "Stand-alone" (en el que el adaptador es externo e independiente del dispositivo al que se conecta) o en modo "Built-in" (en el que el adaptador se integra en el dispositivo del que se desea mejorar su sonido). Así, el adaptador puede fabricarse como un dispositivo aislado o como un módulo electrónico integrado en un instrumento musical, en un ordenador, micrófono, televisión, auto-radio, Home Cinema, reproductores multimedia, auriculares, altavoces, mesas de mezclas y, en general, cualquier dispositivo electrónico aplicable en la industria del sonido o audiovisual. The proposed adapter system can be attached to the device whose audio output is to be processed (for example a musical instrument, a microphone, a television ...), in "Stand-alone" mode (in which the adapter is external and independent of the device to which it is connected) or in "Built-in" mode (in which the adapter is integrated into the device for which you want to improve its sound). Thus, the adapter can be manufactured as an isolated device or as an electronic module integrated in a musical instrument, in a computer, microphone, television, auto-radio, Home Cinema, media players, headphones, speakers, mixers and, in general , any electronic device applicable in the sound or audiovisual industry.
Opcionalmente, el sistema adaptador puede incorporar un módulo que permita la desactivación del sistema (en este estado, el sistema no haría nada con la señal sino que entregaría en la salida la misma señal que recibe a la entrada, es decir, conectaría directamente la entrada con la salida sin realizar ningún procesado de la señal). Este mismo módulo, permitiría su activación o puesta en funcionamiento de nuevo (en este estado funcionaría de la manera habitual descrita en los párrafos anteriores) después de haber sido desactivado. Optionally, the adapter system can incorporate a module that allows the deactivation of the system (in this state, the system would do nothing with the signal but it would deliver at the output the same signal it receives at the input, that is, it would directly connect the input to the output without performing any signal processing). This same module would allow its activation or start-up again (in this state it would work in the usual way described in the previous paragraphs) after being deactivated.
En una realización, para implementar este módulo de desactivación/activación, por ejemplo se podría incluir en cualquiera de las realizaciones del sistema adaptador descritas anteriormente, un conmutador entre el conector de audio analógico de entrada y el buffer amplificador (101). Este conmutador permitiría seleccionar entre una primera posición y una segunda posición, donde el conmutador tiene una entrada conectada a la salida del conector de audio analógico de entrada del sistema adaptador y dos salidas, una primera salida conectada a la entrada del buffer amplificador de entrada (101) y una segunda conectada directamente a la salida del adaptador (a todos los conectores de audio analógicos de salida del sistema adaptador). En la primera posición (posición de activado o ΌΝ"), la entrada del conmutador queda conectada con la primera salida, de manera que el buffer queda conectado con el conector de audio analógico de entrada (funcionamiento habitual, tal como aparece por ejemplo en las figuras 1 , 2 o 3) y en la segunda posición del conmutador (posición de desactivado o "OFF"), la entrada del conmutador queda conectada con la segunda salida por lo que la señal de entrada va directamente a los conectores de audio analógicos de salida (es decir, en esta segunda posición el sistema simplemente conectará la entrada con la salida sin procesar la señal). In one embodiment, to implement this deactivation / activation module, for example, a switch between the analog input audio connector and the amplifier buffer (101) could be included in any of the embodiments of the adapter system described above. This switch would allow selecting between a first position and a second position, where the switch has an input connected to the output of the analog input audio connector of the adapter system and two outputs, a first output connected to the input of the input amplifier buffer ( 101) and a second one connected directly to the adapter output (to all analog audio connectors of the adapter system). In the first position (activated position or ΌΝ "), the switch input is connected to the first output, so that the buffer is connected to the analog input audio connector (usual operation, as it appears for example in the Figures 1, 2 or 3) and in the second switch position (off or "OFF" position), the switch input is connected to the second output so the input signal goes directly to the analog audio connectors of output (that is, in this second position the system will simply connect the input to the output without processing the signal).
Así, en esta realización opcional, el usuario podrá conmutar entre estas 2 posiciones mediante un botón o cualquier otro interfaz externo. Por ejemplo, en una realización el adaptador estaría ubicado en un pedal (en modo aislado o integrado en el pedal del instrumento al que está conectado) y el usuario podría con el pie accionar el pedal para activar o desactivar el sistema adaptador Thus, in this optional embodiment, the user can switch between these 2 positions by means of a button or any other external interface. For example, in one embodiment the adapter would be located on a pedal (in isolated mode or integrated in the pedal of the instrument to which it is connected) and the user could with the foot actuate the pedal to activate or deactivate the adapter system
Este sistema adaptador permite mejorar la calidad de una señal de audio de manera muy sencilla, eficiente y económica, por lo que tiene infinidad de aplicaciones prácticas. Entre la cual se citan aquí algunas a modo de ejemplo: - Un músico que toca un instrumento. En este caso, la señal del instrumento se introduciría en el adaptador. Éste procesaría dicha señal, la convertiría a digital y se la daría (a través del conector USB) a un dispositivo electrónico (¡Pad, ¡Phone, laptop... ) donde mediante una aplicación (en vez de costosos equipos más grandes y difíciles de manejar) el músico puede editar, mezclar, ecualizar... y, en resumen, procesar como desee dicha señal. Dicha señal procesada se introduce otra vez en el adaptador, que la convierte en analógica (la procesa para mejorar la calidad analógica de la misma si estamos en el caso de que la señal pasa por el "analogizador") y la ofrece a la salida. Así el usuario, podría procesar la señal de su instrumento de manera sencilla y barata y obtener una señal de salida analógica óptima. This adapter system allows to improve the quality of an audio signal in a very simple, efficient and economical way, so it has many practical applications. Among which some are cited here as an example: - A musician who plays an instrument. In this case, the instrument signal would be inserted into the adapter. This would process this signal, convert it to digital and give it (through the USB connector) to an electronic device (¡Pad, ¡Phone, laptop ...) where through an application (instead of expensive larger and more difficult equipment to handle) the musician can edit, mix, equalize ... and, in short, process the signal as desired. This processed signal is introduced back into the adapter, which converts it into analog (it processes it to improve its analog quality if we are in case the signal passes through the "analog") and offers it to the output. Thus, the user could process the signal of his instrument easily and cheaply and obtain an optimal analog output signal.
Un caso particular de este uso sería el usar el adaptador como amplificador de instrumento: La señal analógica de un instrumento (por ejemplo una guitarra), se introduce en el adaptador, se convierte en digital, se envía a un ¡Phone (por el conector USB) que la procesa con simulación de amplificador. La señal retorna al adaptador, se reconvierte a analógico, se amplifica y sale por altavoces conectados al adaptador. A particular case of this use would be to use the adapter as an instrument amplifier: The analog signal of an instrument (for example a guitar), is inserted into the adapter, becomes digital, is sent to a ¡Phone (through the connector USB) that processes it with amplifier simulation. The signal returns to the adapter, converts to analog, is amplified and output through speakers connected to the adapter.
- Uso karaoke: La señal analógica de la voz del usuario se introduce en el adaptador (por un micrófono conectado al mismo), se convierte en digital, la señal se envía (por el conector USB) a un ¡Pad (u otro dispositivo como una televisión inteligente, una tableta, un portátil... ) que la procesa con efectos vocales, etc. Asimismo procesa el playback y nos muestra la letra en la pantalla. La señal retorna al adaptador, se reconvierte a analógica, se amplifica y sale por altavoces. - Karaoke use: The analog signal of the user's voice is inserted into the adapter (by a microphone connected to it), it becomes digital, the signal is sent (via the USB connector) to a ¡Pad (or other device such as a smart TV, a tablet, a laptop ...) that processes it with vocal effects, etc. It also processes playback and shows us the lyrics on the screen. The signal returns to the adapter, converts to analog, amplifies and outputs through speakers.
- En el caso de una persona melómana, que no tiene a su disposición un equipamiento de alta gama analógico (caro y difícil de usar) y que tiene su música en formato mp3 en su dispositivo móvil; pero que desea una señal de audio analógica de alta calidad. En este caso, el usuario conectaría el adaptador a su dispositivo móvil (mediante el conector USB) y el adaptador haría una conversión óptima (con todas las ventajas explicadas anteriormente) de digital a analógico, ofreciendo a su salida una señal de audio analógica de alta calidad (recuperando la experiencia de los viejos equipos de audio profesional). - In the case of a musician, who does not have high-end analog equipment available (expensive and difficult to use) and who has his music in mp3 format on his mobile device; But you want a high quality analog audio signal. In this case, the user would connect the adapter to his mobile device (via the USB connector) and the adapter would make an optimal conversion (with all the advantages explained above) from digital to analog, offering at its output a high analog audio signal quality (recovering the experience of old professional audio equipment).
- En un espacio público o privado (palacio de congresos, discoteca... ) donde se quiere que un determinado sonido (una charla, un curso, música que se esté reproduciendo... ) llegue a todos los asistentes. Actualmente hay una severa normativa de ruidos, por lo que es importante no pasarse en ningún momento del umbral de sonido permitido. Aquí intervienen dos conceptos, volumen y claridad. Si se aumenta la claridad, se necesitará menos volumen para que el discurso que se está dando o la música tenga inteligibilidad y, por lo tanto el oyente entenderá perfectamente lo que se está diciendo o la música sin un volumen excesivo, por lo que se estaría lejos del umbral considerado de contaminación acústica (por ejemplo 90 dBs), evitando molestias. Esto se conseguiría con el adaptador propuesto, ya que la actuación del adaptador dota a la señal analógica de salida de una claridad mayor evitando volúmenes excesivos y las consiguientes sanciones. - In a public or private space (congress hall, disco ...) where you want a certain sound (a talk, a course, music being played ...) to reach all attendees. There is currently a severe noise regulation, so it is important not to exceed the allowed sound threshold at any time. Here are two concepts, volume and clarity. If the clarity is increased, less volume will be needed so that the speech that is being given or the music has intelligibility and, therefore, the listener will perfectly understand what is being said or the music without excessive volume, so it would be away from the threshold considered noise pollution (for example 90 dBs), avoiding discomfort. This would be achieved with the proposed adapter, since the performance of the adapter gives the analog output signal greater clarity avoiding excessive volumes and the consequent penalties.
En este texto, el término "comprende" y sus derivaciones (como "comprendiendo", etc.) no deben entenderse en un sentido excluyente, es decir, estos términos no deben interpretarse como excluyentes de la posibilidad de que lo que se describe y define pueda incluir más elementos, etapas, etc. In this text, the term "comprises" and its derivations (such as "understanding", etc.) should not be understood in an exclusive sense, that is, these terms should not be construed as excluding the possibility that what is described and defined can include more elements, stages, etc.
Algunas realizaciones preferidas de la invención se describen en las reivindicaciones dependientes que se incluyen seguidamente. Some preferred embodiments of the invention are described in the dependent claims that are included below.
Descrita suficientemente la naturaleza de la invención, así como la manera de realizarse en la práctica, hay que hacer constar la posibilidad de que sus diferentes partes podrán fabricarse en variedad de materiales, tamaños y formas, pudiendo igualmente introducirse en su constitución o procedimiento, aquellas variaciones que la práctica aconseje, siempre y cuando las mismas, no alteren el principio fundamental de la presente invención. Describing sufficiently the nature of the invention, as well as the manner in which it is carried out in practice, it is necessary to state the possibility that its different parts may be manufactured in a variety of materials, sizes and shapes, and may also be introduced into its constitution or procedure, those variations that the practice advises, as long as they do not alter the fundamental principle of the present invention.
La descripción y los dibujos simplemente ilustran los principios de la invención. Por lo tanto, debe apreciarse que los expertos en la técnica podrán concebir varias disposiciones que, aunque no se hayan descrito o mostrado explícitamente en este documento, representan los principios de la invención y están incluidas dentro de su alcance. Además, todos los ejemplos descritos en este documento se proporcionan principalmente por motivos pedagógicos para ayudar al lector a entender los principios de la invención y los conceptos aportados por el (los) inventor(es) para mejorar la técnica, y deben considerarse como no limitativos con respecto a tales ejemplos y condiciones descritos de manera específica. Además, todo lo expuesto en este documento relacionado con los principios, aspectos y realizaciones de la invención, así como los ejemplos específicos de los mismos, abarcan equivalencias de los mismos. Aunque la presente invención se ha descrito con referencia a realizaciones específicas, los expertos en la técnica deben entender que los anteriores y diversos otros cambios, omisiones y adiciones en la forma y el detalle de las mismas pueden realizarse sin apartarse del espíritu y del alcance de la invención tal como se definen mediante las reivindicaciones siguientes. The description and drawings simply illustrate the principles of the invention. Therefore, it should be appreciated that those skilled in the art will be able to devise various provisions that, although not explicitly described or shown herein, represent the principles of the invention and are included within its scope. In addition, all the examples described in this document are provided primarily for pedagogical reasons to help the reader understand the principles of the invention and the concepts contributed by the inventor (s) to improve the technique, and should be considered as non-limiting with respect to such examples and conditions specifically described. In addition, everything stated in this document related to the principles, aspects and embodiments of the invention, as well as the specific examples thereof, encompass equivalences thereof. Although the present invention has been described with reference to specific embodiments, those skilled in the art should understand that the foregoing and various other changes, omissions and additions in the form and detail thereof can be made without departing from the spirit and scope of the invention as defined by the following claims.

Claims

R E I V I N D I C A C I O N E S
1. - Un sistema adaptador (100) de audio, caracterizado por que comprende los siguientes componentes integrados en una misma carcasa portátil: 1. - An audio adapter system (100), characterized in that it comprises the following components integrated in the same portable housing:
- al menos un conector de audio analógico de entrada;  - at least one analog audio input connector;
- un primer buffer amplificador (101) con impedancia variable para recibir una señal de audio analógica de entrada a través del conector de entrada,  - a first amplifier buffer (101) with variable impedance to receive an analog audio input signal through the input connector,
- un filtro paso bajo (102) para filtrar la señal analógica procedente del búffer amplificador (101),  - a low pass filter (102) to filter the analog signal from the amplifier buffer (101),
- un conector USB (105);  - a USB connector (105);
- un módulo de conversión (103) compuesto por un conversor analógico digital para convertir la señal analógica procedente del filtro paso de baja en una señal de audio digital y un conversor digital analógico para convertir una señal digital recibida a través del conector USB (105) en una señal de audio analógica;  - a conversion module (103) composed of a digital analog converter to convert the analog signal from the low pass filter into a digital audio signal and an analog digital converter to convert a digital signal received through the USB connector (105) in an analog audio signal;
- al menos un primer conector de audio analógico de salida con un segundo buffer amplificador (108);  - at least a first analog output audio connector with a second amplifier buffer (108);
2. - Un sistema adaptador de acuerdo a la reivindicación 1 , que además comprende un segundo conector de audio analógico de salida para auriculares con un amplificador (1 10). 2. - An adapter system according to claim 1, further comprising a second analog audio output jack for headphones with an amplifier (1 10).
3. - Un sistema adaptador de acuerdo a las reivindicaciones 1 o 2, donde todos los conectores de audio analógico de salida del sistema adaptador están conectados directamente con el módulo de conversión (103) de manera que la señal analógica de entrada de dichos conectores es la señal de audio analógica de salida del módulo de conversión. 3. - An adapter system according to claims 1 or 2, wherein all the analog audio output connectors of the adapter system are directly connected to the conversion module (103) so that the analog input signal of said connectors is The analog audio signal output of the conversion module.
4. - Un sistema adaptador de acuerdo a las reivindicaciones 1 o 2, que además comprende: 4. - An adapter system according to claims 1 or 2, further comprising:
- un preamplificador analógico (107) que comprende un filtro paso banda y medios de ajuste de diafonía, conectado a la salida del módulo de conversión;  - an analog preamplifier (107) comprising a bandpass filter and crosstalk adjustment means, connected to the output of the conversion module;
- un convertidor DC/DC (106) para convertir la tensión de alimentación del sistema a la tensión del preamplificador (107); donde todos los conectores de audio analógico de salida del sistema adaptador están conectados con una salida del preamplificador analógico. - a DC / DC converter (106) to convert the system supply voltage to the preamp voltage (107); where all the analog audio connectors of the adapter system are connected to an analog preamp output.
5.- Un sistema adaptador de acuerdo de acuerdo a las reivindicaciones 1 o 2, que además comprende: 5. An adapter system according to claims 1 or 2, further comprising:
- un preamplificador analógico (107) que comprende un filtro paso banda y medios de ajuste de diafonía, donde todos los conectores de audio analógico de salida están conectados con la salida del preamplificador analógico; - an analog preamplifier (107) comprising a bandpass filter and crosstalk adjustment means, where all analog audio output connectors are connected to the analog preamp output;
- un convertidor DC/DC (106) para convertir la tensión de alimentación del sistema a la tensión del preamplificador (107); - un conmutador (104) para seleccionar entre una primera posición (104A) y una segunda posición (104B), donde el conmutador tiene una entrada conectada a una salida del módulo de conversión (103) y dos salidas, una primera salida conectada a todos los conectores de audio analógicos de salida del sistema adaptador y una segunda salida conectada a la entrada del preamplificador analógico (107), y donde en la primer posición (104A) del conmutador, la entrada del conmutador queda conectada con la primera salida de manera que la señal analógica de entrada de dichos conectores de salida es la señal de audio analógica de salida del módulo de conversión y en la segunda posición (104B) del conmutador, la entrada del conmutador queda conectada con la segunda salida por lo que el preamplificador analógico (107) queda conectado a la salida del módulo de conversión. - a DC / DC converter (106) to convert the system supply voltage to the preamp voltage (107); - a switch (104) to select between a first position (104A) and a second position (104B), where the switch has an input connected to an output of the conversion module (103) and two outputs, a first output connected to all the analog audio connectors of the adapter system output and a second output connected to the analog preamp input (107), and where in the first position (104A) of the switch, the switch input is connected to the first output so that The analog input signal of said output connectors is the analog audio signal of the conversion module and in the second position (104B) of the switch, the input of the switch is connected to the second output so that the analog preamplifier ( 107) is connected to the output of the conversion module.
6. - El sistema adaptador (100) según cualquiera de las reivindicaciones 4-5, donde el preamplificador (107) analógico opera en una banda de frecuencias entre 40Hz y 16KHz. 6. - The adapter system (100) according to any of claims 4-5, wherein the analog preamplifier (107) operates in a frequency band between 40Hz and 16KHz.
7. - El sistema adaptador (100) según cualquiera de las reivindicaciones 4-6, donde el preamplificador (107) analógico realiza un ajuste de diafonías entre canales de entrada de 40dBs. 7. - The adapter system (100) according to any of claims 4-6, wherein the analog preamplifier (107) performs a crosstalk adjustment between input channels of 40dBs.
8. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores donde el segundo búffer amplificador es de baja impedancia. 8. The adapter system (100) according to any of the preceding claims wherein the second amplifier buffer is of low impedance.
9. -. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores donde el filtro paso bajo (102) tiene una frecuencia de corte de 20KHz. 9. -. The adapter system (100) according to any of the preceding claims wherein the low pass filter (102) has a cutoff frequency of 20KHz.
10. -. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores, donde el primer amplificador (101) es de impedancia variable en un rango entre 4,7 kQ y 1 ΜΩ. 10. -. The adapter system (100) according to any one of the preceding claims, wherein the first amplifier (101) is of variable impedance in a range between 4.7 kQ and 1 ΜΩ.
1 1. -. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores donde el módulo de conversión (103) está integrado en un códec compatible con interfaces HID. eleven. -. The adapter system (100) according to any one of the preceding claims wherein the conversion module (103) is integrated in a codec compatible with HID interfaces.
12.-. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores, donde los conectores de audio analógico son conectores tipo Jack. 12.-. The adapter system (100) according to any of the preceding claims, wherein the analog audio connectors are Jack type connectors.
13.-. El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores donde el sistema se conecta exteriormente a un dispositivo electrónico, donde el dispositivo electrónico es un instrumento musical, un equipo de televisión, una radio, un ordenador, un micrófono, un reproductor multimedia, home cinema, auriculares, altavoces, mesa de mezclas o cualquier dispositivo electrónico de audio o audiovisual. 13.-. The adapter system (100) according to any of the preceding claims wherein the system is connected externally to an electronic device, wherein the electronic device is a musical instrument, a television set, a radio, a computer, a microphone, a media player, Home cinema, headphones, speakers, mixing console or any electronic audio or audiovisual device.
14.- El sistema adaptador (100) según cualquiera de las reivindicaciones 1-12 donde el sistema está incorporado en un dispositivo electrónico, donde el dispositivo electrónico es un instrumento musical, un equipo de televisión, una radio, un ordenador, un micrófono, un reproductor multimedia, home cinema, auriculares, altavoces, mesa de mezclas o cualquier dispositivo electrónico de audio o audiovisual. 14. The adapter system (100) according to any of claims 1-12 wherein the system is incorporated in an electronic device, wherein the electronic device is a musical instrument, a television set, a radio, a computer, a microphone, a media player, home cinema, headphones, speakers, mixing console or any electronic audio or audiovisual device.
15.- El sistema adaptador (100) según cualquiera de las reivindicaciones anteriores que además es compatible con interfaces HID e incluye uno o más controles incorporados en el sistema, mediante los cuales el usuario puede interactuar con un dispositivo electrónico al que el sistema está conectado. 15. The adapter system (100) according to any of the preceding claims which is also compatible with HID interfaces and includes one or more controls incorporated in the system, by means of which the user can interact with a electronic device to which the system is connected.
PCT/ES2015/070005 2015-01-09 2015-01-09 Universal audio adapter system WO2016110602A1 (en)

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ES1062672U (en) * 2005-12-20 2006-07-16 Canhold International Ltda. Communication device for mobile telephone (Machine-translation by Google Translate, not legally binding)
KR20080040825A (en) * 2006-11-06 2008-05-09 삼성전자주식회사 Head-set using short-distance wireless communication and method for controling audio signal thereof
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