CN102893633A

CN102893633A - Audio system equalization for portable media playback devices

Info

Publication number: CN102893633A
Application number: CN2011800226271A
Authority: CN
Inventors: A·J·希菲尔德
Original assignee: Dolby Laboratories Licensing Corp
Current assignee: Dolby Laboratories Licensing Corp
Priority date: 2010-05-06
Filing date: 2011-04-13
Publication date: 2013-01-23
Anticipated expiration: 2031-04-13
Also published as: HK1221845A1; EP2986034B1; JP2013530420A; JP2017194703A; EP2567554B1; ES2632576T3; EP2567554A1; EP2986034A1; JP6377018B2; WO2011139502A1; CN102893633B; JP2015180954A

Abstract

A method, an apparatus, a system, and logic encoded in a computer-readable storage medium to instruct a processing system to carry out the method. The method includes applying corrective filters directly in a portable media device to correct, e.g., equalize for the overall system comprising the portable media device and the playback system to which it is attached. Also a method of determining the corrective filters by playing back one or more calibration signals on the playback system while recording the resulting sound field on the portable media device.

Description

The audio system equalization that is used for the portable media playback reproducer

The cross reference of related application

The application requires the U.S. Provisional Patent Application No.332 of submission on May 6th, 2010,159 priority, and the whole of this U.S. Provisional Patent Application are incorporated in this by reference.

Technical field

The disclosure is usually directed to Audio Signal Processing, and relates to especially the audio system equalization for attachment device for displaying audio/.

Background technology

Attachment device for displaying audio/has become the very common mode that is used for playback media.The device of the audio frequency of playback stored digital (such as

And mobile phone) is used to playback of music and audio-visual content.Trend for the growth of this device is, they and transcriber and system for plays back audio miscellaneous are attached.For example, the user may be attached to her iPod the household audio and video system that comprises loud speaker, has the TV of loud speaker or have the independently docking station (docking station) of loud speaker.In these each is an example of the different playback system that identical mancarried device may be attached.

The portable playback reproducer that namely is used in the audio frequency of stored digital can obtain more than ten year, and decades appearred in the mancarried device that is used for the audio frequency of the stored digital on playback dish or the belt, also still exists when this device is connected to one of one group of possible playback system playback from the needs of the equalization of the audio frequency of this device.As how long this device is in commercially available example, the Diamond Multimedia in California makes Portable playback reproducer was introduced into the playback for MP3 in 1998.By the HanGo Electronics Co. of Korea S, the PJB-100Personal Jukebox that Ltd makes usually admitted to be first based on the device of hard drive and in 1999 by commercial introducing.Apple IPOD was introduced in calendar year 2001.In these devices each comprises digital processing unit in order to decompress and present the audio frequency of the compression of stored digital.

Can be advantageously, in attachment device for displaying audio/, comprise equalization filter, this equalization filter will directly be applied to audio signal in attachment device for displaying audio/, in order to carry out equilibrium for whole system, this whole system comprises attachment device for displaying audio/and the attached playback system of listening to experience to be used for improving thereof.Can be further advantageously, in attachment device for displaying audio/, comprise many group equalization filters, each group can be applicable to the different playback system in the attached playback system of mancarried device possibility, in order to carry out equilibrium for whole system, this whole system comprises attachment device for displaying audio/and attached playback system thereof.Also can be advantageously, method with terminal use's operation, the method uses attachment device for displaying audio/to determine the one group of equalization filter that uses with specific playback system in attachment device for displaying audio/, in order to carry out equilibrium for whole system, this whole system comprises attachment device for displaying audio/and attached playback system thereof.

Description of drawings

Figure 1A and Figure 1B respectively show the simplification view of the playback system that user, attachment device for displaying audio/and attachment device for displaying audio/can couple with it, and wherein Figure 1A shows the element in the calibration mode, and Figure 1B shows the element in the playback mode.

Fig. 2 shows the simplified block diagram of an example embodiment of the attachment device for displaying audio/that comprises at least one feature of the present invention.

Fig. 3 shows the simplified block diagram of an example embodiment of the attachable playback system of attachment device for displaying audio/, and is used in when so connecting and realizes in the feature of the present invention.

Fig. 4 shows the simplified flow chart of the embodiment of calibration steps.

Fig. 5 shows the simplified flow chart of the method for operation attachment device for displaying audio/, for attachment device for displaying audio/or in the data of attachment device for displaying audio/storage for the set of the group of correcting filter.

Fig. 6 shows the simplified block diagram according to a layout of some embodiments of the present invention, and these embodiment comprise the remote storage for the data of the set of one or more group of correcting filter.

Embodiment

General introduction

Embodiments of the invention comprise method, equipment, system and encode in computer-readable storage medium so that the indication treatment system realizes the logic of the method.The method comprises directly using in attachment device for displaying audio/proofreaies and correct filtering (for example, equalization filtering), is used at least proofreading and correct for the whole system that comprises attachment device for displaying audio/and attached playback system thereof, for example, carries out equilibrium.

Some embodiment comprise the method that operates attachment device for displaying audio/.The method comprises: when attachment device for displaying audio/couples with specific playback system, when attachment device for displaying audio/is used from the set of one or more group of pre-stored correcting filter or is used for the particular group of one or more correcting filter that its data select, playing back audio signal in the attachment device for displaying audio/ in specific audition is arranged and the combination of specific playback system.In attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/or be used for its data.Each group in one or more group of set is arranged with corresponding playback system related with corresponding audition.The particular group of one or more correcting filter is to determine by the calibration process that comprises the steps: the sound field that is obtained by one or more the predefined calibrating signal of playback on the specific playback system at the attachment device for displaying audio/record, utilize microphone built-in or that be connected with attachment device for displaying audio/in the attachment device for displaying audio/to carry out this record during at one or more listener positions place that specific audition is arranged at this microphone, analyze the record of sound field in order to determine to be used for carrying out for specific playback system at least the particular group of one or more balanced correcting filter, and in attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system.

Some embodiment comprise the method that operates attachment device for displaying audio/, it comprises: by the sound field that one or more the predefined calibrating signal of playback on the specific playback system obtains, utilize that microphone built-in or that is connected with attachment device for displaying audio/carries out this record at this microphone at one or more listener positions place of specific audition layout in the attachment device for displaying audio/at attachment device for displaying audio/record.The method comprises the record of analyzing sound field in order to determine at least for the particular group of carrying out one or more balanced correcting filter for specific playback system, and in attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system, so that when attachment device for displaying audio/couples with specific playback system, when attachment device for displaying audio/was used the particular group of determined one or more correcting filter, audio signal can be play with the combination of specific playback system by the attachment device for displaying audio/ in specific audition is arranged.

In some versions, the data that are used for the particular group of one or more correcting filter are stored at attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/storage or be used for its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout.

Some embodiment comprise attachment device for displaying audio/, and it comprises: playback subsystem is configured to the selected audio signal of playback; And the filtering subsystem, couple and be configured to playback subsystem at the during playback of the audio signal group applied audio signal with one or more correcting filter.This attachment device for displaying audio/ also comprises: coupler is configured to attachment device for displaying audio/and the coupling coupler that is included in the playback system are coupled; User interface is configured to accept the input from the user; And microphone or to the coupler of microphone.When the filtering subsystem is configured in specific audition is arranged attachment device for displaying audio/coupled with specific playback system, use the particular group of one or more correcting filter related with specific playback system and specific audition layout during via specific playback system playing back audio signal.The particular group of one or more correcting filter is in attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/or is used for the part of its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout.In some versions, attachment device for displaying audio/is configured to: record is by the sound field that one or more the predefined calibrating signal of playback on the specific playback system obtains, and utilizes the microphone in the attachment device for displaying audio/or the microphone that is connected with attachment device for displaying audio/carries out this record when one or more listener positions place in specific audition layout of this microphone.In more such schemes, attachment device for displaying audio/also is configured to: analyze the record of sound field in order to determine at least for the particular group of carrying out one or more balanced correcting filter for specific playback system; And in attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system.

Some embodiment comprise attachment device for displaying audio/, and it comprises: the parts that are used for playing back audio signal; The parts that are used for filtering are configured to during being used for the parts playing back audio signal of playback the group applied audio signal with one or more correcting filter; Be used for parts that attachment device for displaying audio/and playback system are coupled; Be used for acceptance from the parts of user's input; And the parts that are used for the record sound field.The parts that are used for filtering are configured to arrange when by the parts that are used for coupling attachment device for displaying audio/being coupled with specific playback system at specific audition, use the particular group of one or more correcting filter related with specific playback system and specific audition layout during via specific playback system playing back audio signal.The particular group of one or more correcting filter is in attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/or is used for the part of its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout.Some schemes of attachment device for displaying audio/ also comprise: be used for analyzing the record of the sound field that is obtained by one or more predefined calibrating signal in order to determine the parts of the group of one or more correcting filter; And be used for storage for the parts of the data of the group of one or more correcting filter.Be used for the sound field that one or more listener positions place record that the parts of record are configured to arrange at specific audition is obtained by one or more the predefined calibrating signal of playback on the specific playback system, the parts that are used for analyzing are configured to analyze the record of sound field in order to determine to be used for carrying out for specific playback system at least the particular group of one or more balanced correcting filter; And the parts that are used for storage are configured at attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system.

Specific embodiment can provide in these aspects, feature or the advantage all, some or all do not provide.Specific embodiment can provide one or more other side, feature or advantage, one of them or morely can understand easily according in this application accompanying drawing, specification and claim to those skilled in the art.

Some embodiment

Figure 1A and Figure 1B respectively show the simplification view that user 141, attachment device for displaying audio/121 and attachment device for displaying audio/can be coupled to its playback system 103.These are exemplary components of example embodiment of the present invention.Figure 1A shows the element in the calibration mode, and Figure 1B shows the element in the playback mode.

Attachment device for displaying audio/121 comprises coupler 127, and this coupler 127 is configured to attachment device for displaying audio/is couple to the coupling coupler that is included in the playback system (in this case, playback system 103).Attachment device for displaying audio/121 also comprises user interface 123, and this user interface 123 typically comprises display unit and user's input mechanism, and this user's input mechanism is configured to accept the order from user 141.Attachment device for displaying audio/121 also comprises playback subsystem 128 and filtering subsystem 129, this playback subsystem 128 is configured to the selected audio signal of playback, and this filtering subsystem 129 is couple to playback subsystem and is configured at the during playback of the audio signal group applied audio signal with one or more correcting filter.But not shown more other shown in drawings in detail element at this device comprises processor and storage subsystem in these accompanying drawings, and its element is included in playback subsystem 128 and the filtering subsystem 129 in certain embodiments.Storage subsystem is configured to store the data for one or more group of correcting filter, and with the market demand of particular group in the filtering subsystem.

Playback system 103 comprises that at least one loud speaker 105(has illustrated two in this example playback system) and the playback module 107 that comprises one or more audio frequency amplifier.

Figure 1B illustrates one aspect of the present invention, when being included in the coupler 127 and 113 that goes up separately via media apparatus 127 and playback system 103 attachment device for displaying audio/121 being couple to playback system 103 from the normal playback of the audio signal that is stored in the media file in the attachment device for displaying audio/121.User 141 is at specific listener positions place.The position of specific acoustic surrounding and listener and playback system limits audition and arranges.When attachment device for displaying audio/121 is arranged the particular group of one or more correcting filter of selecting by use for this specific playback system 103 and audition with filtering subsystem 129 from the set of one or more group of pre-stored correcting filter, playing back audio signal in the combination of attachment device for displaying audio/and specific playback system.

As described in more detail below, in attachment device for displaying audio/121 and audition are arranged or arrange the set (for example, have for the data of filter form) of one or more group of pre-stored correcting filter for attachment device for displaying audio/121 and audition.Each group of one or more correcting filter of this set is arranged related with corresponding playback system and corresponding audition.

Figure 1A illustrates another aspect of the present invention: be used for determining to be used at least to arrange that for playback system and audition (in this example, specific playback system 103) carries out the calibration process of the particular group of one or more balanced correcting filter.Attachment device for displaying audio/121 comprises at least one built-in microphone 125, perhaps can be connected with at least one microphone 125.Calibration process comprises: during the listener positions place of one or more expectation of arranging at audition at microphone 125, and the sound field that is obtained by at least one the predefined calibrating signal 111 of playback on the specific playback system 103 at portable playback reproducer 121 records.Calibration process comprises: analyze the record of sound field in order to be identified for being used at least carrying out for specific playback system (and may also for acoustic surrounding) data of the particular group of one or more balanced correcting filter, and in attachment device for displaying audio/121 or for the data of attachment device for displaying audio/121 storages for the particular group that is used for one or more correcting filter of specific playback system (arranging with audition).Notice that in certain embodiments, calibration process comprises from some positions and records and the result is averaging.Therefore can there be the LisPos of arranging related expectation more than with audition.

By this way, in attachment device for displaying audio/or for the data of the set of the pre-stored group for correcting filter of attachment device for displaying audio/, each group of set is related with corresponding playback system and audition layout.

Device

The present invention does not limit the type of attachment device for displaying audio/.Minimum requirements is: can play the audio frequency of stored digital, have one or more microphone or can be connected to one or more microphone, and can be couple in a plurality of playback systems any one.The example of attachment device for displaying audio/includes but not limited to: audio playback, and such as Apple

Sandisk

Creative ZEN

Microsoft

And other model from other manufacturer of listing too much and not.Example also includes but not limited to: the cellular phone with audio storage and playback capability and so-called " intelligence " cellular phone of being made by each manufacturer of cellular phone in fact, and such as Apple IPHONE, Google NEXUS ONE and many other " intelligence " cellular phones of listing too much and not.Voice data but also playing back audiovisual content that many not only playback stored digital are arranged in these are such as the video file of the stored digital of the voice data that can comprise stored digital.

The present invention does not limit the type of playback system yet.Minimum requirements is, comprises one or more loud speaker, and can with portable playback reproducer directly by dock (dock) with it, by wired connection, by wireless connections and via wired or wireless network connection.Minimum requirements also comprises: can when being connected with portable playback reproducer, receive at least one signal that comprises at least from the audio content of portable playback reproducer, and the audio frequency of this signal of playback at least.Minimum requirements also comprises: can playback be stored in the playback system, can be loaded into one or more calibration file in the storage subsystem in the playback system or send to playback system from the external calibration signal source.The example of playback system includes but not limited to: be designed to comprise the so-called docking loud speaker (docking speaker) for the connector of the attachment device for displaying audio/of specific one or more model.For example, the popular shopping website Amazon.com of the U.S. has listed 1953 on March 16th, 2010 for the search in kind of class of electronic devices " iPod speaker ", and has listed 1295 for search " docking speaker ".The example of playback system also includes but not limited to: the household audio and video system that comprises home theater system, some of them also comprise the connector for the attachment device for displaying audio/of specific one or more model, and other comprises common input connector, such as gramophone (RCA) connector and be used for TRS(point, ring, cover (tip, ring, sleeve)) or TRRS(point, ring, ring, cover (tip, ring, ring, sleeve)) socket of connector.The example of playback system also includes but not limited to: comprise loud speaker or be connected to the television set of loud speaker.This television set generally includes the connector for external audio.Example also includes but not limited to: automobile audio system, it generally included in 2010 for the connector of the attachment device for displaying audio/of specific one or more model and/or common input connector, such as being used for TRS(point, ring, cover) or TRRS(point, ring, ring, cover) socket of connector.

Embodiments of the invention are useful especially, because specific attachment device for displaying audio/can be connected to more than a playback system.

Exemplary portable formula media apparatus

Fig. 2 shows the simplified block diagram of an example embodiment of the attachment device for displaying audio/that comprises at least one feature of the present invention.Can be clear that to those skilled in the art, be not that all elements shown in Fig. 2 all can be included in all attachment device for displaying audio/embodiment, and further, some attachment device for displaying audio /s can comprise unshowned extra element among Fig. 2.

The digital element of attachment device for displaying audio/121 comprise by bus subsystem 241(only be depicted as for simplicity single bus) element that couples.These digital elements comprise at least one processor 243, storage subsystem 245, user interface 123, at least one digital interface 231 that couples with main connector 211, and be used for the digital information such as digital audio signal is converted to for one or more digital to analog converter (DAC) via the simulated audio signal of one or more audio frequency amplifier playback of analog subsystem 225, and one or more analog to digital converter (ADC) that is used for simulated audio signal is converted to digitaling analoging signal.DAC is shown as module 233 with ADC together with their related interface.DAC and ADC 233 are couple to analog subsystem 225.Attachment device for displaying audio/121 also comprises at least one wave point 249, such as, but not limited to, radio network interface, Bluetooth interface, infrared interface etc.A this wave point is common Wi-fi IEEE802.11 radio network interface.Some embodiment of attachment device for displaying audio/121 also comprise the cellular telephone wireless network interface, so that this device can serve as cellular phone.Some embodiment also comprise other radio network interface, such as the Bluetooth interface.

Attachment device for displaying audio/121 also comprises battery and related electronics subsystems 215, and it is couple to main connector 211 in one embodiment.

In certain embodiments, analog subsystem 225 is connected to main connector 211, so that for example simulated audio signal is available at main connector 211 places.Main connector 211 also is couple to bus subsystem 241 and at least one digital interface 231, so that signal is provided for any device that is connected with main connector 211 and can obtains from any device that is connected with main connector 211.

Analog subsystem 225 is couple to microphone 125, and this microphone 125 is built-in in the present embodiment.Other embodiment can be connected to microphone 125.Present embodiment also comprises at least one loud speaker 227 that is connected with analog subsystem 225.The group that comprises at least one input/output connector 213, so that the outer set of loud speaker (for example, incorporate in the head-telephone (headphone) loud speaker) can be connected and so that different simulated audio signals can be transfused to via analog subsystem 225.

In certain embodiments, user interface 123 comprise operation be used for to the user show information display screen 261, be used for accepting from one or more button 264 of user's input and also be used for accepting keypad/keyboard 263 from user's input.In certain embodiments, display screen 261 comprises for the touch-sensitive surface of accepting from user's input, and in some this embodiment, in the button 264 at least some are so-called soft key, because they are by so that specific region the Show Button of display screen 261 (may have the message for the user) produces, and so that contacting this specific region, the user just causes identical input as the viewing hardware button.Similarly, although show the module of separation for keypad/keyboard 263, some in these elements or all can comprise soft key on the display screen 261.

Storage subsystem 245 comprises the program of the form with executable instruction, this executable instruction when being carried out by at least one processor 243 so that realize the conventional func of attachment device for displaying audio/121 and be used for realizing of the present invention aspect.For example, in the program 251 some provide this function when carrying out, as so that show and accept be included in the soft key that shows in the display screen 261 from button 264() input, and in certain embodiments, acceptance has the input of many touch gestures form, common such as 2010.Storage subsystem 245 also is configured to storing digital content, be shown in Figure 2 for audiovisual (AV) content 253 of storage, but it can only comprise the audio frequency of stored digital.Content in the content 253 of storage typically is stored as compression data file, for example, is stored in the situation of audio frequency as AAC or mp3 file, such as audio file 254.Program 251 also be included in when being performed so that the audio file of playback stored digital in order to form the instruction that is converted to analog form by the DAC in the module 233 and simulated the digital signal that at least one amplifier in the subsystem 225 amplifies.Therefore, attachment device for displaying audio/121 comprises the playback subsystem that is configured to the selected audio signal of playback.In shown embodiment, playback system by in the DAC of the element of analog subsystem 225, module 233 and the program in the storage subsystem 245 251 when being performed so that playback forms the instruction of the audio content of selected audio signal forms.

As below describing in more detail, storage subsystem 245 also is configured to store a plurality of correcting filter profiles (for example, equalization profile) 257 that comprise for the needed data of group that realize correcting filter.In one embodiment, each correcting filter profile 258 of correcting filter profile set 257 provides in order to realize the needed data of particular group for one or more correcting filter of specific playback system.Because correcting filter profile 258 provides in order to realize the needed data of particular group for one or more correcting filter of specific playback system, therefore for language for simplicity, term " correcting filter profile 258 " and " for the data of the group of one or more correcting filter " will be used with the free burial ground for the destitute.Yet having profile only is a kind of mode that realizes the group of one or more correcting filter, therefore uses identical language to be not intended to limit the invention to use profile.

Therefore, attachment device for displaying audio/121 comprises the filtering subsystem, and this filtering subsystem and playback subsystem couple and are configured at the during playback of the selected audio signal group applied audio signal with one or more correcting filter.

Storage subsystem 245 is comprised of the several types storage device, and comprises solid-state memory and can comprise magnetic memory, for example, and hard disk.As can be clearly to those skilled in the art, many variations be possible.

In the element of attachment device for displaying audio/121 some can be used as the part of large integrated circuit and provide.Can be between more than a device distribution function.In addition, can there be one or more discrete assembly.The function of at least one element can provide by one or more one or more program of execution at least one processor 243.One or more processor 243 can comprise the function of DSP device, for example, has the form of the DSP part of integrated circuit, perhaps in certain embodiments, and the form of the separative DSP device of tool.As an alternative or extraly, can use general processor.Many this variations are possible.For not fuzzy original aspect, do not provide in this application the more details about the possible architecture of attachment device for displaying audio/121.

The example playback system

Fig. 3 illustrates the simplified block diagram of an example embodiment of playback system 103.Attachment device for displaying audio/can be connected to more than a playback system.The playback system that illustrates is an example.Can be clear that to those skilled in the art, be not that all elements shown in Fig. 3 all can be included in all playback system embodiment, and further, some playback systems can comprise unshowned extra element among Fig. 3.For example, the playback system of Fig. 3 comprises many digital elements, comprises the memory of digital media file, and comprises for playback system being connected to wireless network and being used for having the interface that cable network connects.Many playback systems can not have this element.

Playback system is included in the coupler (being coupler 113 shown in Figure 1A and Figure 1B) of attachment device for displaying audio/(such as media apparatus 121).In the embodiments of figure 3, coupler 113 has the form that is configured to the main connector 311 that connects with attachment device for displaying audio/(for example, device 121).Main connector 311 comprises the connection of accepting simulated audio signal from the attachment device for displaying audio/that connects.Main connector 311 is connected with analog subsystem 325, and analog subsystem 325 comprises for one or more audio frequency amplifier via one group that couples one or more loud speaker 105 playing back audio signals.

The group that comprises at least one input/output connector 313 is so that different simulated audio signals can be transfused to via analog subsystem 325.Therefore, as the replacement of main connector 311 or except main connector 311, the analog input connector in 313 also can serve as the coupler (being coupler 113 shown in Figure 1A and Figure 1B) of attachment device for displaying audio/.Certainly, some embodiment do not comprise this extra input, and other embodiment does not comprise the main connector that is configured to accept analog input signal.In certain embodiments, lead-out terminal also is included in the element 313, so that can connect the outer set of loud speaker, for example, comprises the head-telephone of speaker unit.

In shown embodiment, the control of volume etc. realizes via the user interface 347 that comprises in this case digital element.The user interface that is used for playback system can also comprise one or more analog element certainly, such as the analog volume controller.

The digital element of playback system embodiment 103 comprise by bus subsystem 341(only be depicted as for simplicity single bus) element that couples.At least one digital interface 331 and one or more digital to analog converter (DAC) that these digital elements comprise at least one processor 343, storage subsystem 345, user interface 347, couple with main connector 311, this one or more digital to analog converter (DAC) are used for being converted to such as the digital information from the digital audio signal of the AV content that is stored in storage subsystem 345 for the simulated audio signal via one or more audio frequency amplifier playback at least one loud speaker 105 of analog subsystem 325.DAC is shown as module 333 together with their related interface, and couples with analog subsystem 325.

In some versions, playback system 103 also comprises at least one wave point 349, such as, but not limited to, radio network interface, Bluetooth interface, infrared interface etc.A this wave point is common Wi-fi IEEE 802.11 radio network interfaces.Radio network interface makes it possible to be connected to network, for example, home network, this home network can be connected to external network again, for example, the internet.Some embodiment of playback system 103 also comprise infrared interface and the Bluetooth interface that is configured to accept from the order of remote control 315.

Some embodiment also comprise one or more other network interface 335, so that playback system 103 can be connected to cable network, for example, and wired home network, this wired home network can be connected to external network again, for example, the internet.

In certain embodiments, main connector also is couple to charging circuit 317, and this charging circuit 317 is configured to supply electric power in order to the portable playback reproducer that connects is charged, and accepts the control signal relevant with charging.

In certain embodiments, main connector 311 also is couple to bus subsystem 341 and at least one digital interface 331, so that signal is provided for any device that is connected with main connector 311 and can obtains from any device that is connected with main connector 311.

In some embodiment that comprise one or more processor 343 and storage subsystem 345, storage subsystem 345 comprises the program of the form with executable instruction, this executable instruction when being carried out by at least one processor 343 so that realize the conventional func of playback system 103.In some this embodiment, storage subsystem 345 also is configured to storing digital content, be shown in Figure 3 for audiovisual (AV) content 353 of storage, but it can only comprise the audio frequency of stored digital.Content in the content 353 of storage typically is stored as compression data file, for example, is stored in the situation of audio frequency as AAC or mp3 file, such as audio file 354.

Although the invention is not restricted to this embodiment, in certain embodiments, comprise the user interface 347 that digitally drives.In example embodiment, user interface 347 comprises that operation is used for showing the display screen 361 of information and being used for acceptance from one or more button and the knob 364 of user's input to the user.In certain embodiments, display screen 361 comprises for the touch-sensitive surface of accepting from user's input, and in some this embodiment, in button or the knob 364 at least some are so-called soft key, because they are by so that specific region the Show Button of display screen 361 (may have the message for the user) produces, and so that contacting this specific region, the user just causes identical input as the viewing hardware button.Therefore, some in the program 351 for example provide this function when carrying out, as so that show and accept be included in the soft key that shows in the display screen 361 from button 364() input.

Storage subsystem 345 is comprised of the several types storage device, and comprises solid-state memory and can comprise magnetic memory, for example, and hard disk.As can be clearly to those skilled in the art, many variations be possible.

An aspect of embodiments of the invention is by one or more calibrating signal of playback system playback.In some versions, calibrating signal can be for example via aerial lug or via wireless or wired connection input.In other scheme, calibrating signal can be stored in advance in the storage subsystem in digital form.In other scheme, calibrating signal can obtain and be stored in digital form subsequently in the storage subsystem 355 to be used for playback by connection.The calibrating signal of stored digital is shown as calibrating signal 355 in the example embodiment of Fig. 3.

In the element of playback system 103 some can be used as the part of large integrated circuit and provide.Can be between more than a device distribution function.In addition, can there be one or more discrete assembly.The function of at least one element can provide by one or more one or more program of execution at least one processor 343.Many this variations are possible.For not fuzzy original aspect, do not provide in this application the more details about the possible architecture of playback system 103.

The original aspect of embodiments of the invention is, single attachment device for displaying audio/can be connected to some different playback reproducers or an even device can being listened in different positions.Therefore, although shown only playback system example here, it will be understood by those skilled in the art that the many possible playback reproducer that exists attachment device for displaying audio/to connect.Some this playback reproducers are relatively simple, and other is more complicated.

Invention disclosed provide be used for by directly use at attachment device for displaying audio/proofread and correct filtering use may be attached to attachment device for displaying audio/ various playback systems in each mechanism and the method for correction filtering (for example, equalization).The invention is not restricted to the correction filtering of any particular type, and equalization is the example such as the correction filtering that can be employed of describing in this application.

Exemplary method

Some embodiment comprise the method that operates attachment device for displaying audio/121.The method comprises, is couple to specific playback system 103 and when specifically listening in the layout at attachment device for displaying audio/121, playing back audio signal in the combination of attachment device for displaying audio/121/ playback system.At during playback, attachment device for displaying audio/is used the particular group of one or more correcting filter of selecting from the set of the data of pre-stored at least one group that is used for one or more correcting filter.

In attachment device for displaying audio/121 or for the data of the set of pre-stored one or more group for correcting filter of attachment device for displaying audio/121.Related with corresponding playback system (arranging with audition) for the data of each group of gathering.In the example of Fig. 2, the particular group of one or more correcting filter is shown as profile 258, and this profile 258 comprises in order for example to realize the data that the group of filter needs by at least one one or more program of operation in one or more processor 243.

Notice that term " audition layout " can cover a concrete position, maybe can cover the scope of listening to the position or any position of listening to for specific playback system.For example, correcting filter can be designed to the listening to of playback system that equilibrium has specific loud speaker 105, and in the time may being determined for a concrete listener positions, can be used for listening to the scope of position.In addition, can measure (record) from a plurality of positions, in order to determine single average correcting filter for the scope of position.Therefore, term " audition layout " should not be considered to only hint the single position of listening to of using specific playback system,, is not suitable for other position of using specific playback system that is.At first, can be used to the scope of position according to the correcting filter of determining from one or more record of single position, and secondly, in some calibration steps embodiment, can measure from some positions in order to determine to be suitable for single group of " on average " correcting filter of the scope of position.

The exemplary calibration method

Determine the particular group of one or more correcting filter by calibration process.Fig. 4 shows the simplified flow chart of the embodiment of calibration steps 400.Method 400 comprises: in 403, one or more predefined calibrating signal 111 of playback on specific playback system 103, and, in 405, at during playback, the sound field that is obtained by one or more the predefined calibrating signal 111 of playback on the specific playback system 103 at portable playback reproducer 121 records.Utilize microphone 125 built-in or that be connected with attachment device for displaying audio/121 in the attachment device for displaying audio/121 when the listener positions place of this microphone 125 in one or more expectation of a part of arranging as audition, to carry out this record.As noting before, can exist and arrange relatedly more than a position with audition, and this record can be included in the record that carries out more than a position.The method comprises: analyze the record of sound field in order to determine to be used at least to carry out for specific playback system (and may also for acoustic surrounding) particular group of one or more balanced correcting filter in 407, and in 409, in attachment device for displaying audio/or for the particular group of attachment device for displaying audio/storage for one or more correcting filter of specific playback system (and acoustic surrounding).

In one group of embodiment, be stored in the attachment device for displaying audio/121.In another group embodiment, storage (although may provisionally) on attachment device for displaying audio/121, then or is after a while remotely stored for attachment device for displaying audio/121, and for example, the remote storage system on remote server is stored.Therefore, at attachment device for displaying audio/121 " in or for " attachment device for displaying audio/121 for specific playback system 103(and acoustic surrounding) store.

In one embodiment, attachment device for displaying audio/121 comprises user interface, and this user interface presents ' calibration ' button or presents for so that the user can indicate some other function of record, analysis and the storage of the particular group that realizes one or more correcting filter in button 264.Calibration steps is included on the user interface indication that receives from the user in order to realize record, analysis and the storage of the particular group of one or more correcting filter, and realizes these steps in response to this reception.

In addition, comprise among some embodiment of its oneself microphone at attachment device for displaying audio/121, the embodiment of the method provides that be highly susceptible to using, self-contained form factor (form factor) to be used for calibration.The user can knock ' calibration ' button in the button 264 simply, and attachment device for displaying audio/121 is remained in the LisPos, for example, and in playback system loud speaker 105 fronts.

Calibrating signal in one embodiment (for example is stored in advance in the attachment device for displaying audio/121, pre-stored in the storage subsystem 245 of attachment device for displaying audio/121 as calibrating signal 255), and be loaded in the playback system 103 being used for and be stored in the playback system.In other embodiments, attachment device for displaying audio/121 is by wire or wirelessly be connected to playback system from LisPos, and calibrating signal is sent to playback system 103 and playback, and the sound field that the result obtains is recorded be used for to analyze in order to determine particular group for one or more correcting filter of the combination of attachment device for displaying audio/121 and playback system.In yet another embodiment, one or more calibrating signal provides to be used for playback on playback system by some other mechanism, for example, is preloaded in the playback system, or provides in real time by another source.The invention is not restricted to provide to playback system any specific mode of one or more calibrating signal.The present invention also is not limited to the mode that any calibrating signal is provided for playback system, for example, and digital form or as analog signal.

The exemplary method of operation attachment device for displaying audio/,

Fig. 5 (for example shows the operation attachment device for displaying audio/, the simplified flow chart of method 500 device 121), for this attachment device for displaying audio/or be used in the storage of this attachment device for displaying audio/correcting filter group set data (for example, have the form for the data that realize correcting filter), each group is related with corresponding playback system (arranging with audition).

The method comprises: in specific acoustic surrounding attachment device for displaying audio/121 is connected to specific playback system 103 in 503.The method also comprises: in 505 (manually or automatically) select pre-stored be used at least for specific playback system 103(and may be also for acoustic surrounding) carry out the particular group of one or more balanced correcting filter.In the situation that does not have to store for the data of the set of the group of correcting filter, 505 comprise the particular group of loading at least selected one or more correcting filter locally.This may occur discretely, and is selecting different time places from this.507 are included in attachment device for displaying audio/121 when being connected to specific playback system 103 on attachment device for displaying audio/121 playing back audio signal.This playback comprises the particular group of using one or more correcting filter.

Select the group of one or more correcting filter

In the situation about manually selecting in 505, in certain embodiments, attachment device for displaying audio/comprises user interface 123, and this user interface 123 for example comprises the indication to the group of one or more pre-stored correcting filter of user as button 264.The method comprises: media mancarried device 121 for example receives from user's indication via user interface 123 so that the particular group of using one or more correcting filter is to be used for playback.

Some embodiment provide the automatic selection of the group of one or more correcting filter.In certain embodiments, for example, for some so-called " docking loud speaker " playback systems, playback system can be configured to provide indication to attached attachment device for displaying audio/, for example, provide the type of indication playback reproducer and/or the signal of model via main connector.In certain embodiments, method 500 comprises: attachment device for displaying audio/receives the indication from specific playback system of indicating specific attachment device for displaying audio/and specific playback system to couple.Some embodiment of attachment device for displaying audio/are configured such that in response to this indication, the method comprises that the particular group of one or more correcting filter that automatic selection is related with specific attachment device for displaying audio/is to be used for playback.

In addition, some embodiment of attachment device for displaying audio/have for the predefined correcting filter of playback system of specific classification predefined group.For example, simply " docking loud speaker " playback system can form a classification, television receiver can form a classification, household three-dimensional acoustic receiver with loud speaker of connection can form a classification, family expenses receiver with sub-woofer speaker (subwoofer) of connection can form a classification, automobile playback system in the automobile can form a classification, and is like that.In certain embodiments, at least one group in the group of correcting filter is for the predefined default set of a class playback system.

The type of correcting filter

How the type or this correcting filter that the invention is not restricted to any specific correcting filter are implemented or specify.In the near future, attachment device for displaying audio/can have enough disposal abilities and realizes than one group of correcting filter that the multi-band equalization filter is more complicated.The type of some possible correcting filters is described below.These are provided and do not limit the invention to the type of any specific correcting filter as just example.

The multi-band equalization filter

Some embodiment of the group of one or more correcting filter comprise the group of multi-band equalization filter.The frequency range of listening to is divided into one group of frequency band, and each filter of this group multi-band equalization filter is that one of frequency band is set relative gain.This multi-band equalization filter is known in the art.The quantity that is used for the frequency band of any specific attachment device for displaying audio/can be fixed, and perhaps can set, and typically be the quantity of less, for example, 6,9 or 12.The mode that has this filter of many realizations, and an embodiment uses the digital signal processing method of realizing by the program in the program 251 of carrying out at (for example, on the DSP element) on the processor 243.That is to say that the particular group of using one or more correcting filter when attachment device for displaying audio/is couple to specific playback system is included in one or more processor of attachment device for displaying audio/ at least one carries out digital processing to digital signal.In certain embodiments, multi-band equalization filter implanted (implant) is as the set of number parameter filter at each frequency band place.This parameter filter is limited by one group of parameter.In one embodiment, each group of parameter is stored as the correcting filter profile 258 of correcting filter profile set 257, and can be used for realizing the particular group for one or more correcting filter of specific playback system.

In alternate embodiments, the playback circuitry basis in the attachment device for displaying audio/121 realizes one group of variable gain control for the gain parameter separately of the frequency band of predefined quantity.One group of gain setting is stored as the correcting filter profile 258 of correcting filter profile set 257, and can be used for realizing the particular group for one or more correcting filter of specific playback system.

Multi-channel audio

More complicated correcting filter is applicable to via the playback that comprises more than the playback system of two loud speakers, for example, provides the playback system of surround sound, as common in the current home theater system.Correcting filter for this playback system can comprise more complicated setting, and this is set as by attachment device for displaying audio/121 and provides relative gain for the signal that the different loud speaker 105 in the playback system produces.

Process in perception territory (Perceptual domain)

Recently, the perception territory is processed and to be invented, and it has considered to depend on the variation of perception of audio frequency of the reproduction level of audio signal.The audio signal of the time sampling of expression is pretreated in order to produce the time varying spectrum of the signal level in a plurality of frequency bands of indication (critical band), and for example, 40 bands, each band are represented by frequency band number, and piece changes in time.Can produce in many ways the time varying spectrum of audio signal, but advantageously, band is separated so that the frequency resolution of the simulating human sense of hearing.Calculating is called the amount of pumping signal, and it approaches the distribution along the energy of the basilar memebrane of the mankind's inner ear at the critical band place during time block.Although can also use other conversion, such as the discrete cosine transform (MDCT) of revising, but by using analogue audio frequency (for example to see through the frequency response of filter of human external ear and inner ear and band pass filter selected group, be chosen as the band pass filter of the imitation critical band filtering that the basilar memebrane in the human ear is observed at each the critical band place that is concerned about) calculate the in short-term discrete Fourier transform (STDFT) of the operation of audio signal, thus can effectively realize the excitation of perception territory.Example embodiment is used one group of filter of the spacing with 1ERB, and the result obtains altogether 40 bands.

Has the multi-band compressor reducer that tone color keeps the distortion of (timbre preservation) to reduce

In playback reproducer, but voice reproducing can be by the distortion of perception ground, and usually along with the during playback playback level increases and tempestuously distortion.This distortion is often for the playback reproducer frequency dependence.A form of proofreading and correct filtering be before playback with the multi-band compression applications in audio signal in order to reduce distortion and make great efforts to make the playback level maximization.A straightforward procedure comprises the appointment distortion threshold, and its each frequency band for compressor reducer is designated.Compressor reducer is applied to independently each frequency band with different yield values and is no more than any one in the corresponding distortion threshold in order to guarantee output signal.

The one group of correcting filter that improves comprises that the tone color in the multi-band compressor reducer keeps.Tone color keep by according to (i) for the fixing threshold value separately of frequency band and at least in part basis (ii) the audio signal level (numeral or simulated audio signal) in the second frequency band and (iii) the fixed threshold in the second frequency band determine that the time variable threshold value in a plurality of frequency bands each realizes.Therefore, each the time variable threshold value be that input signal is adaptive.If specific frequency band is because on its fixed threshold (perhaps, near fixed threshold) and receive significant gain and reduce, then the time variable threshold value of one or more other frequency band also reduces in order to receive some gains and reduces.

An example embodiment using the multi-band compressor reducer correction filtering of this tone color maintenance comprises the first level that provides or determine the audio signal in fixed threshold and definite the first frequency band for the first frequency band.The first level can be less than fixed threshold.The method further comprises the second level of also determining audio signal for the second frequency band, and when using the second level to calculate for the first frequency band the variable threshold value.The time variable threshold value less than fixed threshold.The method comprises the audio signal in the first frequency band decayed to variable threshold value when being equal to or less than, perhaps alternately, along with near the time variable threshold value and audio signal in first frequency band of decaying all the more.Variable threshold value in the time of can calculating according to the average difference of the audio input signal in each frequency band and its corresponding fixed threshold.Alternatively, can further determine the second fixed threshold for the second frequency band.The second level of audio signal can surpass the second fixed threshold, and the result obtains the audio signal in the second frequency band is decayed to the second fixed threshold.Be used for realizing that one group of correcting filter of this method comprises multi-band bank of filters (filterbank), compression function element and at least one tone color holding element.Each compression function element can be exclusively used in frequency band.The tone color holding element is couple to multi-band bank of filters and compression function element.The tone color holding element receives for the fixed threshold of each frequency band and time variable threshold value for each frequency band is provided.Time variable threshold value for frequency band is determined by the horizontal component ground of out-of-band audio signal.

More details for this correction filtering, referring to the U.S. Provisional Patent Application 61/315 that is entitled as " TECHNIQUES FOR DISTORTION REDUCING MULTI-BAND COMPRESSOR WITH TIMBRE PRESERVATION " of submitting on March 18th, 2010,172, its content is incorporated in this by reference, and its copy is enclosed as appendix A at this.

Be used for the liftering of coupling target response

Proofread and correct another form of filtering and use inverse filter in order to change the frequency response of the loud speaker of playback system, efforts be made so that the loud speaker output and target frequency responses match of liftering.Such as processing based on perception of describing in the above, the frequency band of the whole frequency range that the consideration that the method have been applied to " critical band "-actuate according to perception is determined.Typically, the critical band of division audible frequency range has the width that increases along with the frequency of crossing (across) audible frequency range.The method is used " (the critically banded) of critical minute band " data, and the hint whole frequency range comprises critical band, and data comprise subset, and every subset is comprised of the data of the audio content in different in the expression critical band.

The target frequency response can be smooth or can have some other reservation shape.

In certain embodiments, calibration steps comprises for the loud speaker of playback system and determines inverse filter.Calibration comprises: the impulse response of measuring the loud speaker at each place in the many different locus in audition is arranged, the impulse response of measuring is carried out time alignment and is averaging in order to determine average impulse response, and use the critical band smoothing in order to determine inverse filter according to average impulse response and target frequency response.For example, the critical band smoothing can be applied to average impulse response and also be applied to alternatively the target frequency response during determining inverse filter, perhaps can be applied to determining the target frequency response.Can guarantee the frequency response of listening to the location positioning loud speaker for various in the measurement of the impulse response at place, a plurality of locus.In certain embodiments, the time alignment of the impulse response of measurement is by using real cepstrum (real cepstrum) and minimum phase reconstruct (minimum phase reconstruction) technology to carry out.

In certain embodiments, average impulse response via discrete Fourier transform (DFT) or other time domain to the conversion of frequency domain and be converted into frequency domain.The frequency component that the result obtains represents the average impulse response measured.These frequency components in each transformation library (bin) are combined into the frequency domain data in the critical band (for example 20 band or 40 bands) of lesser amt, as processing for other perception territory.Dividing with becoming the frequency resolution that was designed to imitate the human auditory system in critical minute with data of average impulse response data.Typically come the frequency component in the conversion frequency storehouse is weighted and by will be for the frequency component of suing for peace to produce with the data of weighting for each critical band by use suitable critical band-splitting filter to it, thereby carry out a minute band.Typically, these filter table reveal about circle (rounded) exponential shape and are separated equably with the yardstick of equivalent rectangular bandwidth (Equivalent Rectangular Bandwidth, ERB).Spacing on the frequency of critical band and crossover provide the degree of the regularization (regularization) of the measured impulse response suitable with human auditory system's ability.The application of critical band filter is an example (the critical band filter typically smoothly falls the irregular of incoherent impulse response in the perception, does not proofread and correct these details so that determined inverse filter does not need to spend resource) of critical band smoothing.

Value that be used for to determine inverse filter is to determine according to the target response in the frequency window (for example, critical band) and average the impulse response version of its smoothing (for example according to).The impulse response data of critical minute band are used to seek the inverse filter of the target response that realizes expectation.In certain embodiments, in order to keep equal loudness when using inverse filter, inverse filter preferably represents reference signal (for example pink noise) normalization (normalize) of common sound for its frequency spectrum.

In certain embodiments, in time domain, directly calculate the inverse filter coefficient.

The group of the correcting filter that is applied to the signal in the playback system that the inverse filter that the result obtains forms as describes in this application.

More details for this correction filtering, referring to the international patent application No.PCT/US2010/020846 that is entitled as " METHOD FOR DETERMINING INVERSE FILTER FROM CRITICALLY BANDED IMPULSE RESPONSE DATA " that submitted on January 13rd, 2010, its content is incorporated in this by reference, and its copy is enclosed as appendix B at this.

The data of the group of storage correcting filter

In certain embodiments, the group of parameter that be used for to realize the group of one or more correcting filter is stored on the attachment device for displaying audio/121 or for attachment device for displaying audio/121 as the part of the set of group and is stored.In certain embodiments, this set is stored with the form of database.Each clauses and subclauses is for the one group parameter of realization for the group of one or more correcting filter of specific playback system, and comprises the particular group indicating device related with specific playback system of one or more correcting filter.Therefore, the step 409 that is used for Fig. 4 of this embodiment comprises the indicating device that the particular group of store one or more correcting filter is related with specific playback system.

In certain embodiments, the data (for example, database) of set that are used for one or more group of correcting filter are stored in the storage subsystem that is included in the attachment device for displaying audio/.Therefore, as shown in Figure 2, in certain embodiments, storage subsystem 245 comprises correcting filter profile 257, and shows a this profile 258.

In other embodiments, away from the data of attachment device for displaying audio/ground storage for the set of one or more group of correcting filter.Fig. 6 shows the simplified block diagram according to a layout of some embodiments of the present invention, and these embodiment comprise the remote storage for the data of the set of one or more group of correcting filter.During step 409, originally can be stored in the storage device in the attachment device for displaying audio/121 temporarily, and subsequently at a distance storage, for example, attachment device for displaying audio/be connected to network 625(its can be any the individual's or public network, even the internet) couple personal computer 623 time store at a distance.Server system 627 also is connected to network 625.Server system 627 comprises one or more processor and storage subsystem 645.Storage subsystem 645 is configured to store the data for one or more set of the group of correcting filter, and each this set and specific attachment device for displaying audio/121 or specific user or specific user and attachment device for displaying audio/are related.In shown example, show the data for a set 657 of one or more group of correcting filter.Show the data for a group 658.In certain embodiments, the data of this set have the form of database.The data that are used for each group of one or more correcting filter are stored in database and are called comprising in order to realize the clauses and subclauses of the needed parameter of correcting filter of correcting filter profile as us.When attachment device for displaying audio/121 is connected to via network with personal computer 623 that server 627 is connected, send the particular group of the correcting filter in the temporary storage in the attachment device for displaying audio/121 to be used for being stored in the storage subsystem 645 of server 627.Similarly, when attachment device for displaying audio/121 is connected to via network with personal computer 623 that server 627 is connected, for example is stored in the storage subsystem 645 one or more group as the correcting filter of correcting filter profile and can be loaded onto in the attachment device for displaying audio/121 usefulness for playback.Therefore, for example, when attachment device for displaying audio/couples with specific playback system, can be loaded into attachment device for displaying audio/121 for the usefulness of playback from remote memory for the particular group of the correcting filter of specific playback system.

Analyze

Process action 405 and be included in the sound field that record is obtained by playback calibrating signal on playback system 103 on the attachment device for displaying audio/121.Processing action 407 comprises and analyzes this record in order to determine to be used at least to carry out for specific playback system (and may also for acoustic surrounding) particular group of one or more balanced correcting filter.

The invention is not restricted to one or more calibrating signal or any specific analytical method of any specific type.In one embodiment, calibrating signal by the different periodicity pitch of the known amplitude at the different frequency place of predefined quantity and form.In one embodiment, centre frequency is the centre frequency of the correcting filter of use in attachment device for displaying audio/121.The centre frequency of graphic equalizer is generally the distribution of logarithm ground, for example, and with octave (in octaves).In certain embodiments, thus the centre frequency of the component of test signal also expanded by logarithm ground.In certain embodiments, the amplitude of the different frequency component of test signal equates, and in other embodiments, amplitude changes according to the inverse of frequency.

Analyzing and processing 407 comprises to be determined at the amplitude at the different frequency place of the record that records in order to determine that meeting at the frequency place is so that the balanced gain of response.Gain at the centre frequency place forms the data of the particular group of one or more correcting filter, for example, for attachment device for displaying audio/121 or in attachment device for displaying audio/121 for the correcting filter profile of specific playback system and acoustic surrounding storage.

An alternate embodiments is used for calibrating signal with noise signal.In one embodiment, calibrating signal is white noise signal,, has the noise signal that identical power distributes for all frequencies that is.In another embodiment, calibrating signal is pink noise signal,, has the noise signal that the reciprocal proportional power with frequency distributes that is.Be used as among some embodiment of calibrating signal in noise signal, utilize the digital synthesis method of pseudo noise to produce noise signal by using.

Be used as among some embodiment of calibrating signal in noise signal, analyze 407 and comprise the spectrum that well known to a person skilled in the art the sound field of the next definite record of method (for example by realizing discrete Fourier transform (DFT), for example carrying out as fast Fourier transform (FFT)) by use.

According to the result of conversion and for the target reference spectrum of processing signal afterwards by the group of one or more correcting filter, determine and storage is used for the data of the particular group of one or more correcting filter, the particular group of this one or more correcting filter revise the sound field that records determined spectrum in case coupling for the target reference spectrum of specific playback system and acoustic surrounding.

Although described above digital method is used for analyzing 407, in alternate embodiments, some in this analysis or all can carry out by analog circuit.The signal of record for example is divided into frequency band by one group of band pass filter, and the level measurement circuit is used to determine the signal of the signal power in the expression frequency band.Then these data values can be digitized, and determine for one group of gain of frequency band with as data in order to store for the group of one or more correcting filter that is used for specific playback system and acoustic surrounding.

Therefore method and apparatus has been described.In certain embodiments, calibrating signal on playback system by playback.Use built-in or attached microphone, the sound field that the result obtains is recorded on the attachment device for displaying audio/.The sound field of analytic record and calculating are for the group of one or more correcting filter of playback system.Be used for the data of the group of one or more correcting filter on attachment device for displaying audio/or for attachment device for displaying audio/storage, these data are related with described playback system.Therefore storage is for the data of the set of the group of correcting filter.Then can fetch the data that are used for particular group of storage, and the particular group of when attachment device for displaying audio/attaches to corresponding playback system, giving played any one or more correcting filter of voice applications from attachment device for displaying audio/.Because embodiments of the invention are included in and use equalization in the attachment device for displaying audio/, therefore this embodiment provides the benefit for the indoor equalization of the audio playback system that does not comprise this feature.In addition, when attachment device for displaying audio/comprised its oneself microphone, some embodiments of the present invention provided that be highly susceptible to using, self-contained form factor to be used for calibration.The user knocks simply the calibration knob and keeps attachment device for displaying audio/ listening in the position in the loud speaker front of playback system.

In the context of the document, term " wireless " and derivative thereof can be used to describe can be by using modulation the circuit of electromagnetic radiation by non-solid medium transmission data, device, system, method, technology, channel etc.

Unless concrete statement, otherwise, as apparent from following explanation, understand that in the discussion of whole specification the term that utilizes such as " processings ", " calculatings ", " computing ", " determining " etc. refers to data one-tenth that manipulation and/or map table be shown physical quantity (such as the electronics amount) and is expressed as similarly the computer of other data of physical quantity or action and/or the processing of computing system or similar computing electronics.

In a similar fashion, term " processor " can refer to processing for example from the electronic data of register and/or memory in order to this electronic data is transformed to any device that for example can be stored in other electronic data in register and/or the memory or the part of device." computer " or " computing machine " or " computing platform " can comprise one or more processor.

Note, when describing method comprises some key elements (for example, some steps), unless particularly statement, otherwise do not hint the order of this key element (for example, step).

In certain embodiments, computer-readable storage medium (for example is configured to have, be encoded and have) be stored in instruction wherein, this instruction when one or more processor of processed system (such as the digital signal processing device that comprises at least one processor elements and storage subsystem or subsystem) is carried out so that the method that realizes as describe in this application.

The methodology of describing in this application be in certain embodiments can by be received in the instruction of encoding on one or more computer-readable medium, one or more processor of logic is carried out.When being carried out by one or more processor, instruction is so that realize in this application at least one method of description.Any processor that comprises one group of instruction carrying out the action that appointment will take (order or other).Therefore, an example is the typical treatment system that comprises one or more processor.Each processor can comprise one or more in CPU or similar element, Graphics Processing Unit (GPU) and/or the programmable DSP unit.Treatment system also comprises the storage subsystem with at least one storage medium, it can comprise the memory that embeds in the semiconductor device, perhaps comprises main RAM and/or static RAM (SRAM) and/or ROM and the memory sub-system that also comprises the separation of cache memory.Storage subsystem can also comprise one or more other storage device, such as magnetic and/or optics and/or other solid-state storage device.Can comprise that the bus subsystem communicates being used between assembly.Treatment system can also be the distributed processing system(DPS) with the processor that couples by network (for example, via Network Interface Unit or radio network interface device).If treatment system requires display, then can comprise this display, for example, liquid crystal display (LCD), organic light emitting display (OLED) or cathode ray tube (CRT) display.If require the input of manual data, then treatment system also comprises such as alphanumeric input unit (such as keyboard), points to the input unit in the control device (such as mouse) etc. one or more.Unless if based on context be clearly and clearly to state, otherwise, also comprise the storage system such as disk drive unit such as term " storage device ", " storage subsystem " or " memory cell " of using among the application.Treatment system in some configurations can comprise voice output and Network Interface Unit.

Therefore storage subsystem comprises computer-readable storage medium, this computer-readable storage medium (for example is configured to have, be encoded and have) instruction, for example, logic, for example, software, this instruction when being carried out by one or more processor so that one or more in the method step of realizing describing in this application.Software may reside in the hard disk, or can also all or at least in part be present in the RAM by computer system the term of execution and/or in the processor at it.Therefore, memory and processor also consist of the computer-readable medium of the instruction that coding is arranged on it.

In addition, computer-readable storage medium can form computer program, or is included in the computer program.

In alternate embodiments, one or more processor operations is as independently installing or can (for example connecting in the deployment of network connection, network connection) to one or more other processor, one of them or more processor can with the status of server or the status operation of client machine in the client-server network environment, perhaps operate as peer machines in equity or distributed network environment.Unless get rid of clearly in this application, otherwise term " treatment system " comprises the possibility that all are such.One or more processor can form personal computer (PC), attachment device for displaying audio/, media playback system, dull and stereotyped PC, set-top box (STB), PDA(Personal Digital Assistant), game machine, cellular phone, Web apparatus (appliance), network router, switch or bridge or can carry out any machine of one group of instruction of the action that appointment will be taked by this machine (order or other).

Note, although some figure only show single processor and single storage subsystem, for example, storage comprises the single memory of the logic of instruction, but it will be appreciated by those skilled in the art that the many assemblies in the above-described assembly are included, but illustrate ambiguously or describe in order not blur original aspect.For example, although individual machine only is shown, term " machine " should also be regarded as comprising carries out one group of (or many group) instruction independently or in combination in order to carry out any one or any set of more machine in the methodology of discussing in this application.

Therefore, an embodiment of each in the method for describing in this application has the form of computer-readable storage medium, this computer-readable storage medium is configured to have one group of instruction, for example, computer program, its when upper execution of one or more processor (for example, as one or more processor of the part of attachment device for displaying audio/) so that the implementation method step.Some embodiment have the form of logic itself.Therefore, as will be apparent to those skilled in the art, embodiments of the invention can by specific implementation be method, equipment (such as special purpose equipment), equipment (such as data handling system), logic (for example, be embodied in the computer-readable storage medium) or coding the computer-readable storage medium (for example, configuration is as the computer-readable storage medium of computer program) of instruction is arranged.Computer-readable medium is configured to have one group of instruction, this instruction when being carried out by one or more processor so that the implementation method step.Therefore, method, fully hardware implementation example, complete implement software example or in conjunction with the form of the embodiment of software and hardware aspect can be taked in aspect of the present invention.In addition, the present invention for example can take the programmed logic in computer-readable medium (for example, computer program on the computer-readable storage medium) or configuration have the form of computer-readable medium (for example, computer program) of computer-readable program code.

Although computer-readable medium is shown as single medium in example embodiment, but term " medium " should be regarded as comprising single medium or a plurality of medium (for example, some memories, centralized or distributed data base and/or related high-speed cache and server) of the instruction of storing one or more group.Computer-readable medium can be taked many forms, includes but not limited to non-volatile media and Volatile media.Non-volatile media comprises, for example, and CD, disk and magneto optical disk.Volatile media comprises dynamic memory, such as main storage.

Also will understand, embodiments of the invention are not limited to any specific implementation or programming technique, and the present invention can be with being used for realizing that any suitable technology of the function of description realizes in this application.In addition, embodiment is not limited to any specific programming language or operating system.

Mention that in whole specification " embodiment " or " embodiment " mean, specific feature, structure or the characteristic of describing of being combined with embodiment is included at least one embodiment of the present invention.Therefore, the phrase " in one embodiment " in each place in whole specification or the appearance of " in an embodiment " differ to establish a capital and refer to same embodiment, but may refer to same embodiment.In addition, can be clearly according to the disclosure such as those skilled in the art, can be in any suitable manner in conjunction with specific feature, structure or characteristic in one or more embodiment.

Similarly, be understood that, in the foregoing description of example embodiment of the present invention, for the disclosure being oversimplified and being helped to understand one or more purpose in each original aspect, each feature of the present invention is integrated into sometimes together in single embodiment, figure or its explanation.Yet disclosed the method is not interpreted as reflecting that invention required for protection need to be than the intention of the more feature of feature of clearly narrating in each claim.On the contrary, such as the reflection of following claim, original aspect depends on less than single all features at front disclosed embodiment.Therefore, the claim after the embodiment is incorporated in this embodiment thus clearly, and each claim self remains independent embodiments of the invention.

In addition, be included in some features in other embodiment but do not comprise further feature although some embodiment that describe in this application comprise, but the combination of the feature of different embodiment intention within the scope of the present invention, and form different embodiment, as skilled in the art will understand.For example, in the claim, can use any claimed embodiment with any combination below.

In addition, some embodiment are described in this application as the combination of the key element of the method that can realize by the processor of computer system or by other parts of practical function or method.Therefore, have the parts that are formed for the key element of implementation method or method be used to the processor of the essential instruction of the key element that realizes this method or method.The element of the apparatus embodiments of describing in this application in addition, is for the example that realizes by the parts of the function of carrying out for the element of realizing purpose of the present invention.

In the explanation that provides in this application, many details have been stated.Yet, be to be understood that embodiments of the invention can be put into practice in the situation of these details not having.In other example, for not fuzzy understanding to this explanation, be not shown specifically known method, structure and technology.

Unless otherwise prescribed, as used in this article, the different example of mentioning similar object is only indicated in the use that is used for describing the order adjective " first ", " second ", " the 3rd " etc. of common object, and be not intended to hint the object of description like this must be temporally, spatially, graduation ground or have the sequence that provides with any alternate manner.

The world (PCT) patent application of all United States Patent (USP)s of quoting in this application, U.S. Patent application and the appointment U.S. is incorporated in this by reference.Do not allow in the situation of incorporating material itself that incorporate information by reference into by reference in patent regulation or rules, this any information by incorporating into by reference with reference to eliminating in the material of incorporating into of being incorporated in of reference of passing through of material in this application is unless this information is incorporated into this by reference clearly.

It is general approval known, that the public is known or that form the part of the general knowledge in this area that the discussion of any prior art in this manual never should be considered to this prior art.

In below the claim and the explanation among the application, term " comprises ", " by ... form " or " it comprises " in any one be open term, it means to comprise at least element/feature subsequently, but does not get rid of other.Therefore, when using in the claims, term " comprises " should not be interpreted as limiting parts or element or the step of listing thereafter.For example, the scope of statement " device comprises A and B " should not be limited to the device that only is comprised of element A and B.Term " comprises " or in " it comprises " or " comprising ... " any one also is open term as used in this article, and it also means to comprise at least the element/feature after this term, but does not get rid of other.Therefore, " comprise " and " comprising " synonym and mean " comprising ".

Similarly, be noted that when using in the claims that term " couples " only should not be interpreted as being restricted to and directly connects.Can use term " to couple " and be connected connection " and derivative.Be to be understood that these terms are not intended to each other synonym of conduct.The scope of therefore, statement " device A is couple to device B " should not be limited to device or the system that the output of wherein installing A is directly connected to the input of device B.This means to exist between the input of the output of A and B can be the path that comprises the path of other device or parts." couple " and can mean two or more element direct physical or electrically contact, perhaps two or more elements are not in direct contact with one another but still cooperation or interact with each other.

Therefore; although described the embodiment that is considered to the preferred embodiments of the present invention; but those skilled in the art will recognize that in the situation that does not break away from spirit of the present invention can to its carry out other and further revise, and be intended to claimed as fall within the scope of the present invention all change and modification.For example, any formula of providing of the above only represents operable process.Can in block diagram, add or from block diagram delete function, and can be between functional block swap operation.Can add or delete step the method for describing within the scope of the present invention.

Claims

1. method that operates attachment device for displaying audio/, described method comprises

When attachment device for displaying audio/couples with specific playback system, when attachment device for displaying audio/is used from the set of one or more group of pre-stored correcting filter or is used for the particular group of one or more correcting filter that its data select, playing back audio signal in attachment device for displaying audio/in specific audition is arranged and the combination of specific playback system

Wherein in attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/or be used for its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout, and

The particular group of one of them or more correcting filters is to determine by the calibration process that comprises the steps:

The sound field that is obtained by one or more the predefined calibrating signal of playback on the specific playback system at attachment device for displaying audio/record, carry out this record when utilizing the listener positions place of one or more expectation that microphone built-in or that be connected with attachment device for displaying audio/in the attachment device for displaying audio/arranges at specific audition at this microphone

Analyze the record of sound field in order to determine to be used for carrying out for specific playback system at least the particular group of one or more balanced correcting filter, and

In attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system.

2. the method for claim 1, wherein away from the set of one or more group of attachment device for displaying audio/ground storage correcting filter or be used for its data, and, when attachment device for displaying audio/couples with specific playback system or before, the particular group of correcting filter or the data that are used for it are loaded in attachment device for displaying audio/ to be used for playback.

3. the method for claim 1, wherein the set of one or more group of correcting filter or the data that are used for it are stored in the storage subsystem that is included in the attachment device for displaying audio/.

4. as the described method of arbitrary aforementioned claim, comprise that also the media mancarried device receives from user's indication so that the particular group of using one or more correcting filter is to be used for playback.

5. such as the described method of arbitrary aforementioned claim, comprise that also attachment device for displaying audio/receives the indication from specific playback system of pointing out that specific attachment device for displaying audio/and specific playback system couple, and in response to this indication, attachment device for displaying audio/selects the particular group of one or more correcting filter related with specific attachment device for displaying audio/ to be used for playback automatically.

6. such as the described method of arbitrary aforementioned claim, wherein at least one group in the group of correcting filter is for the predefined default set of a class playback system.

7. as the described method of arbitrary aforementioned claim, wherein in attachment device for displaying audio/or for the attachment device for displaying audio/storage, comprise for the particular group of one or more correcting filter of specific playback system or the data that are used for it: store the particular group of one or more correcting filter indicating device related with specific playback system.

8. such as the described method of arbitrary aforementioned claim, wherein attachment device for displaying audio/comprises user interface, and wherein calibration steps is included on the user interface and receives from user's indication in order to realize the particular group of one or more correcting filter or be used for record, analysis and the storage of its data.

9. as the described method of arbitrary aforementioned claim, wherein attachment device for displaying audio/by network-coupled to teleprocessing system, and wherein analytic record in order to determine that particular group comprises:

Sound field or the data relevant with it of record are sent to teleprocessing system,

In teleprocessing system, determine particular group, and

Receive determined particular group or be used for its data from teleprocessing system via network.

10. such as any one the described method in the claim 1 to 8, wherein analytic record is to be carried out by one or more processor that is included in the attachment device for displaying audio/in order to determine the step of particular group.

11. a method that operates attachment device for displaying audio/, described method comprises

By the sound field that one or more the predefined calibrating signal of playback on the specific playback system obtains, utilize that microphone built-in or that is connected with attachment device for displaying audio/carries out this record at this microphone at the listener positions place of one or more expectation of specific audition layout in the attachment device for displaying audio/at attachment device for displaying audio/record;

In attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system,

So that when attachment device for displaying audio/couples with specific playback system, when attachment device for displaying audio/was used the particular group of determined one or more correcting filter, audio signal can be play with the combination of specific playback system by the attachment device for displaying audio/ in specific audition is arranged.

12. method as claimed in claim 11, the data that wherein are used for the particular group of one or more correcting filter are stored at attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/storage or be used for its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout.

13. method as claimed in claim 12, wherein at least one group in the group of correcting filter is for the predefined default set of a class playback system.

14. such as any one the described method in the claim 11 to 12, the particular group of one of them or more correcting filters or the data that are used for it are stored in the storage subsystem away from attachment device for displaying audio/so that attachment device for displaying audio/and specific playback system couple when being used for playing back audio signal or before the particular group of correcting filter or the data that are used for it be loaded in attachment device for displaying audio/.

15. such as any one the described method in the claim 11 to 12, the particular group of one of them or more correcting filters or the data that are used for it are stored in the storage subsystem that is included in the attachment device for displaying audio/.

16. such as any one the described method in the claim 11 to 13, wherein in attachment device for displaying audio/or for attachment device for displaying audio/storage, comprise for the particular group of one or more correcting filter of specific playback system or the data that are used for it: store the particular group of one or more correcting filter indicating device related with specific playback system.

17. such as any one the described method in the claim 11 to 16, wherein attachment device for displaying audio/comprises user interface, and wherein the method also is included on the user interface and receives from user's indication in order to realize the particular group of one or more correcting filter or be used for record, analysis and the storage of its data.

18. such as any one the described method in the claim 11 to 17, wherein attachment device for displaying audio/by network-coupled to teleprocessing system, and wherein analytic record in order to determine that particular group comprises:

In teleprocessing system, determine particular group, and

19. such as any one the described method in the claim 11 to 17, wherein analytic record is to be carried out by one or more processor that is included in the attachment device for displaying audio/in order to determine the step of particular group.

20. an attachment device for displaying audio/comprises:

Playback subsystem is configured to the selected audio signal of playback;

The filtering subsystem couples and is configured to playback subsystem at the during playback of the audio signal group applied audio signal with one or more correcting filter;

Coupler is configured to attachment device for displaying audio/and the coupling coupler that is included in the playback system are coupled;

User interface is configured to accept the input from the user; And

Microphone or to the coupler of microphone;

When wherein the filtering subsystem is configured in specific audition is arranged attachment device for displaying audio/coupled with specific playback system, during via specific playback system playing back audio signal, use the particular group of arranging one or more related correcting filter with specific playback system and specific audition

The particular group of one of them or more correcting filters is in attachment device for displaying audio/or for the set of one or more group of the pre-stored correcting filter of attachment device for displaying audio/or is used for the part of its data, and each group in one or more group of set is related with corresponding playback system with corresponding audition layout.

21. attachment device for displaying audio/as claimed in claim 20, wherein attachment device for displaying audio/is configured to:

Record is by the sound field that one or more the predefined calibrating signal of playback on the specific playback system obtains, and utilizes the microphone in the attachment device for displaying audio/or the microphone that is connected with attachment device for displaying audio/carries out this record when the listener positions place of this microphone in one or more expectation of specific audition layout;

Analyze the record of sound field in order to determine at least for the particular group of carrying out one or more balanced correcting filter for specific playback system; And

22. any one the described attachment device for displaying audio/ as in the claim 20 to 21 also comprises:

At least one processor; And

Storage subsystem is couple to filtering subsystem and this at least one processor,

The particular group of wherein using one or more correcting filter is included at least one processor in one or more processor digitally processing digital signal.

23. such as any one the described attachment device for displaying audio/ in the claim 20 to 22, wherein away from the set of one or more group of attachment device for displaying audio/ground storage correcting filter or be used for its data, and when attachment device for displaying audio/couples with specific playback system or before the particular group of correcting filter or the data that are used for it be loaded in attachment device for displaying audio/ to be used for playback.

24. attachment device for displaying audio/as claimed in claim 22, wherein the set of one or more group of correcting filter or the data that are used for it are stored in storage subsystem.

25. such as any one the described attachment device for displaying audio/ in the claim 20 to 24, wherein user interface is configured to receive from user's indication so that the particular group of using one or more correcting filter is to be used for playback.

26. such as any one the described attachment device for displaying audio/ in the claim 20 to 25, wherein attachment device for displaying audio/is configured to receive the indication from specific playback system of pointing out that specific attachment device for displaying audio/and specific playback system couple, and in response to this indication, automatically select the particular group of one or more correcting filter related with specific attachment device for displaying audio/ to be used for playback.

27. such as any one the described attachment device for displaying audio/ in the claim 20 to 26, wherein at least one group in the group of correcting filter is for the predefined default set of a class playback system.

28. such as any one the described attachment device for displaying audio/ in the claim 21 to 27, wherein in attachment device for displaying audio/or for attachment device for displaying audio/storage, comprise for the particular group of one or more correcting filter of specific playback system or the data that are used for it: store the particular group of one or more correcting filter indicating device related with specific playback system.

29. such as any one the described attachment device for displaying audio/ in the claim 21 to 28, wherein attachment device for displaying audio/is configured to receive from user's indication in order to realize the particular group of one or more correcting filter or be used for record, analysis and the storage of its data in user interface.

30. such as any one the described attachment device for displaying audio/ in the claim 21 to 29, wherein attachment device for displaying audio/comprise for attachment device for displaying audio/via network-coupled to the network interface of teleprocessing system, and wherein attachment device for displaying audio/is configured in order to determine the processing of particular group for analytic record:

Sound field or the data relevant with it of record are sent to teleprocessing system so that teleprocessing system can be determined particular group, and receive determined particular group or for its data via network from teleprocessing system.

31. any one the described attachment device for displaying audio/ as in claim 21 and 23 to 29 also comprises:

At least one processor,

Wherein analytic record is carried out by this at least one processor in order to determine particular group.

32. a portable media playback reproducer comprises

The parts that are used for playing back audio signal;

The parts that are used for filtering are configured to during being used for the parts playing back audio signal of playback the group applied audio signal with one or more correcting filter;

Be used for parts that attachment device for displaying audio/and playback system are coupled;

Be used for acceptance from the parts of user's input; And

The parts that are used for the record sound field;

The parts that wherein are used for filtering are configured to when specific audition layout is coupled attachment device for displaying audio/by the parts that are used for coupling with specific playback system, during via specific playback system playing back audio signal, use the particular group of arranging one or more related correcting filter with specific playback system and specific audition

33. attachment device for displaying audio/as claimed in claim 32 also comprises:

Be used for analyzing the record of the sound field that is obtained by one or more predefined calibrating signal in order to determine the parts of the group of one or more correcting filter; And

Be used for storage for the parts of the data of the group of one or more correcting filter,

The parts that wherein are used for record are configured to the sound field that obtained by one or more the predefined calibrating signal of playback on the specific playback system at the listener positions place record of one or more expectation that specific audition is arranged, and the parts that are used for analyzing are configured to analyze the record of sound field in order to determine to be used for carrying out for specific playback system at least the particular group of one or more balanced correcting filter; And the parts that are used for storage are configured at attachment device for displaying audio/or for the data of attachment device for displaying audio/storage for the particular group that is used for one or more correcting filter of specific playback system.

34. any one the described attachment device for displaying audio/ as in the claim 32 to 33 also comprises the parts for digital processing,

The parts that wherein are used for filtering comprise the digital processing of digital signal being carried out by the parts that are used for digital processing.

35. such as any one the described attachment device for displaying audio/ in the claim 32 to 34, wherein away from the set of one or more group of attachment device for displaying audio/ground storage correcting filter or be used for its data, and when attachment device for displaying audio/couples with specific playback system or before the particular group of correcting filter or the data that are used for it be loaded in attachment device for displaying audio/ to be used for playback.

36. attachment device for displaying audio/as claimed in claim 34, wherein the set of one or more group of correcting filter or the data that are used for it are stored in the parts for storage.

37. such as any one the described attachment device for displaying audio/ in the claim 32 to 36, parts that wherein be used for to accept input are configured to receive from user's indication so that the particular group of using one or more correcting filter is to be used for playback.

38. such as any one the described attachment device for displaying audio/ in the claim 32 to 37, wherein attachment device for displaying audio/is configured to receive the indication from specific playback system of pointing out that specific attachment device for displaying audio/and specific playback system couple, and in response to this indication, automatically select the particular group of one or more correcting filter related with specific attachment device for displaying audio/ to be used for playback.

39. such as any one the described attachment device for displaying audio/ in the claim 32 to 38, wherein at least one group in the group of correcting filter is for the predefined default set of a class playback system.

40. such as any one the described attachment device for displaying audio/ in the claim 33 to 39, wherein in attachment device for displaying audio/or for attachment device for displaying audio/storage, comprise for the particular group of one or more correcting filter of specific playback system or the data that are used for it: store the particular group of one or more correcting filter indicating device related with specific playback system.

41. such as any one the described attachment device for displaying audio/ in the claim 33 to 40, wherein attachment device for displaying audio/is configured to receive from user's indication in order to realize the particular group of one or more correcting filter or be used for record, analysis and the storage of its data at parts that be used for to accept input.

42. such as any one the described attachment device for displaying audio/ in the claim 33 to 41, wherein attachment device for displaying audio/comprise for being connected with network interface in case with attachment device for displaying audio/via network-coupled to the parts of teleprocessing system, and wherein attachment device for displaying audio/is configured in order to determine the processing of particular group for analytic record:

43. any one the described attachment device for displaying audio/ as in claim 33 and 35 to 41 also comprises:

The parts that are used for digital processing,

Wherein be used for analytic record and use the parts that are used for digital processing in order to determine the parts of particular group.