WO2016197340A1 - An audio signal processing device - Google Patents
An audio signal processing device Download PDFInfo
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- WO2016197340A1 WO2016197340A1 PCT/CN2015/081144 CN2015081144W WO2016197340A1 WO 2016197340 A1 WO2016197340 A1 WO 2016197340A1 CN 2015081144 W CN2015081144 W CN 2015081144W WO 2016197340 A1 WO2016197340 A1 WO 2016197340A1
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- WO
- WIPO (PCT)
- Prior art keywords
- audio signal
- processing device
- signal processing
- input
- audio
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/01—Input selection or mixing for amplifiers or loudspeakers
Definitions
- the invention relates to an audio signal processing device, and particularly but not exclusively, to an audio signal processing device for signal transmission via RCA connectors.
- RCA connecters which are also known as phono connectors, cinch connectors or simply A/V jacks, are used as interconnectors to transmit both digital and analogue signals to and/or from audio devices.
- a pair of red and white colored RCA connectors is conventionally used to represent the left and the right channels for transmitting analogue audio signals.
- a single yellow or orange colored RCA connector such as a Sony/Philips Digital Interface Format (SPDIF) coaxial interconnection is also commonly used for transmitting a SPDIF digital signal, with both the left and the right channels being encoded into a signal carried on a single RCA connector.
- SPDIF Sony/Philips Digital Interface Format
- the quantity of audio signal connectors provided or required by an audio product can be substantial. It is not unusual that the interconnectors available on an audio device may occupy a substantial portion of the space at the rear and/or the front panel of the device. In certain instances, the area required to accommodate the interconnectors may essentially define the minimum size of the audio product.
- An object of the present invention is to mitigate or obviate to some degree one or more problems associated with existing audio processing devices, or to provide at least a useful alternative.
- the invention provides an audio signal processing device.
- the device comprises an input for receiving an input signal; an output for transmitting an output signal; a switch module adapted to electrically and/or electronically connect the input to the output; wherein the switch module is adapted to select one of at least two different switch pathways for connecting the input to the output dependent on a type of the input signal.
- the invention provides an audio signal processing system.
- the system comprises an audio device; and an audio signal processing device according to the first main aspect.
- the audio signal processing device is electronically connectable with the audio device, with an input adapted to receive an input signal from the audio device; wherein the audio signal processing device further comprises a switch module adapted to automatically select one of at least two different switch pathways for connecting the input to an output of the audio signal processing device dependent on a type of the input signal.
- the invention provides an audio signal processing system.
- the system comprises an audio device; and an audio signal processing device according to the first main aspect.
- the audio signal processing device is electronically connectable with the audio device, with an output adapted to transmit an output signal to the audio device; wherein the audio signal processing device further comprises a switch module adapted to select one of at least two different switch pathways for connecting the input to an output of the audio signal processing device according to a user’s manual selection.
- Figure 1 is a circuit diagram showing a first embodiment of the audio signal processing device of the present invention.
- Figure 2 is a circuit diagram showing a second embodiment of the audio signal processing device of the present invention.
- any element expressed as a means for performing a specified function is intended to encompass any way of performing that function including, for example, a) a combination of circuit elements that performs that function or b) software in any form, including, therefore, firmware, microcode or the like, combined with appropriate circuitry for executing that software to perform the function.
- the invention as defined by such claims resides in the fact that the functionalities provided by the various recited means are combined and brought together in the manner which the claims call for. It is thus regarded that any means that can provide those functionalities are equivalent to those shown herein.
- the present invention relates to an audio signal processing device which enables a selective connection, automatically and/or manually, between an input and an output according to a required audio signal type.
- This is advantageous in that it allows transmission of both digital audio and analogue audio signals to and/or from an audio device, but negates the needs to provide separate interconnectors for both types of signals at the device as found in the conventional audio signal processing devices.
- the user may manually select the preferred type of signal during system use, or alternatively, the device may automatically detect, determine or deduce the required signal type and subsequently, the device will connect the inlet and outlet via the appropriate signal pathway.
- the present invention allows for a significant reduction in the required space for accommodating the interconnectors at the device, and thus facilitate a more compact design of audio signal processing systems. This is particularly beneficial for small size, compact audio devices that do not necessarily have sufficient space to accommodate both the analogue and the digital RCA connectors.
- the audio signal processing device 10 is electronically connectable with an external audio device (not shown) via an RCA connection comprising a dual RCA connector 20.
- the audio signal processing device 10 comprises an input 2 for receiving an input signal, and an output 4 for transmitting an output signal.
- the input 2 comprises a first digital SPDIF signal pathway 35 adapted to receive a digital audio signal generated by a digital signal processing module 30, and a second analogue signal pathway 55 adapted to receive an analogue audio signal generated by an analogue processing module 50.
- the output 4 comprises the RCA connector 20 for outputting either the digital audio signal or the analogue audio signal.
- the digital signal processing module 30 further comprises a transformer 40 for impedance matching purposes.
- the audio signal processing device 10 further comprises a switch module 60 adapted to electrically and/or electronically connect the input 2 to the output 4.
- the switch module 60 is capable of selecting one of the two switch pathways, namely the digital SPDIF signal pathway 35 and the analogue signal pathway 55, for connecting the input 2 to the output 4 dependent on the type of the input signal.
- the switch module 60 is adapted to select either the digital signal pathway 35 or the analogue signal pathway 55.
- the switch module 60 may comprise one or more of a mechanical switch, an electronic switch and a software logic switch.
- the switch module 60 may include a mechanical relay and/or an electronic multiplexer.
- the switch module 60 can be controlled by a control unit 100 such as a microcomputer unit (MCU).
- the MCU 100 is capable of instructing or controlling the switch module 60 to switch between the two signal pathways and thus connect either the digital signal pathway 35 between the input 2 and the output 4 or to connect the analogue signal pathway 55 between the input 2 and the output 4 thereby transmitting the required audio signal type to the output.
- the MCU 100 is configured to disable, e.g. power down or power off, either the digital signal processing module 30 or the analogue signal processing module 50, dependent on which was not selected by the user, for the purpose of power savings.
- the MCU 100 may comprise a storage means 102 such as a non-volatile memory adapted to store an operation status of the switch module 60, for example, whether a digital or an analogue signal pathway has been selected by the user and subsequently, to maintain the corresponding operation of the switch module 60 for one or more power cycles.
- a storage means 102 such as a non-volatile memory adapted to store an operation status of the switch module 60, for example, whether a digital or an analogue signal pathway has been selected by the user and subsequently, to maintain the corresponding operation of the switch module 60 for one or more power cycles.
- FIG. 2 shown is a circuit diagram of an audio signal processing device 110 according to a second embodiment of the present invention. Similar to the previous embodiment, the audio signal processing device 110 is electronically connectable with an external audio device via an RCA connection.
- the device 110 comprises an input 12 with a dual RCA connector 120 for receiving an input audio signal from an audio signal processing device.
- the input audio signal can be either a digital audio signal or an analogue audio signal.
- the device 110 further comprises an output having both a digital SPDIF signal pathway 135 and an analogue signal pathway 155 outputting a digital audio signal and an analogue audio signal, respectively.
- the digital signal pathway 135 comprises a digital signal processing module 130 for processing the digital SPDIF signal
- the analogue signal pathway 155 comprises an analogue signal processing module 150 for processing the analogue signal.
- the digital signal processing module 130 may further comprise a transformer 140 for impedance matching purposes.
- the device 110 also comprises a switch module, although not shown in the figure, which is adapted to electrically and/or electronically connect the input 12 to the output 14. Similar to the switch module 160 as described in the previous embodiment, this switch module is adapted to select one of the two switch pathways, namely the digital SPDIF signal pathway 135 and the analogue signal pathway 155, for connecting the input 12 to the output 14 dependent on the type of the input signal received at the input RCA connector. Preferably, the switch module is adapted to automatically select one of the two switch pathways dependent on a detection, a determination or a deduction of the type of the input signal by the MCU 1100. Specifically, the MCU 1100 may comprise a monitoring module adapted to detect the input signal type, monitor the input signal type, determine a type of the input signal, or even to deduce a type of the input signal.
- the monitoring module of the MCU 1100 is adapted to constantly or periodically monitor the digital signal processing module 130 to check if its internal phase-locked loop (PLL) circuit is locked to a valid SPDIF digital signal. If the PLL is not locked, the MCU 1100 will determine or deduce that the input signal is not a SPDIF signal, but that it is an analogue audio signal. The MCU 1100 will control the switch module to select the appropriate switch pathway between the input 12 and the output 14 to convey the input signal to the analogue audio signal processor 150 which it automatically enables, i.e. powers up, for processing of the analogue audio signal and thus outputting the analogue signal.
- PLL phase-locked loop
- the MCU may determine or deduce that this indicates that a valid SPDIF digital signal is available and the MCU 1100 will automatically maintain selection of the the digital signal pathway 135 to output a digital type signal, and simultaneously disable or power off the analogue signal processing module 150 to save power.
- any time taken for the switch module to switch between the analog and digital pathways will not result in any noticeable audio noise signal due to the SPDIF signal being played to the analog receiver as the analog receiver is band limited to the audio bandwidth, i.e. approximately 20KHz, although this does vary a little between different types of systems, and that the SPDIF signal has almost no signal power within the audio frequency range.
- the device may include two channels for the digital SPDIF pathway, or one on each of the RCA connectors.
- the present invention also relates to an audio signal processing system.
- the system comprises an audio device; and an audio signal processing device as described above.
- the audio signal processing device is electronically connectable with the audio device, with an input adapted to receive an input signal from the audio device; wherein the audio signal processing device further comprises a switch module adapted to automatically select one of at least two switch pathways, namely a digital audio signal pathway and an analogue audio signal pathway, for connecting the input to an output of the audio signal processing device dependent on a type of the input signal.
- the audio signal processing system comprises an audio device; and an audio signal processing device as described above.
- the audio signal processing device is electronically connectable with the audio device, with an output adapted to transmit an output signal to the audio device; wherein the audio signal processing device further comprises a switch module adapted to either one of a digital audio signal pathway and an analogue signal pathway for connecting the input to an output of the audio signal processing device according to the user’s manual selection.
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Abstract
An audio signal processing device (10) comprises an input (2) for receiving an input signal; an output (4) for transmitting an output signal; a switch module (60) adapted to electrically and/or electronically connect the input (2) to the output (4); wherein the switch module (60) is adapted to select one of a digital audio signal pathway (35) and an analogue audio signal pathway (55) for connecting the input (2) to the output (4) dependent on a type of the input signal. A system comprises an audio device electronically connectable with the audio signal processing device (10) as described above.
Description
The invention relates to an audio signal processing
device, and particularly but not exclusively, to an audio signal processing
device for signal transmission via RCA connectors.
For the various consumer audio products in the market
such as but not limited to audio loudspeakers, audio signal amplifiers and
audio media players, it is common for the products to adopt different format
interconnection systems and standards to allow the audio content of different
signal types to be wired to and from various signal sinks and sources. Very
often, RCA connecters, which are also known as phono connectors, cinch
connectors or simply A/V jacks, are used as interconnectors to transmit both
digital and analogue signals to and/or from audio devices. For example, a pair
of red and white colored RCA connectors is conventionally used to represent the
left and the right channels for transmitting analogue audio signals. A single
yellow or orange colored RCA connector such as a Sony/Philips Digital Interface
Format (SPDIF) coaxial interconnection is also commonly used for transmitting a
SPDIF digital signal, with both the left and the right channels being encoded
into a signal carried on a single RCA connector.
Depending on specific applications, the quantity of
audio signal connectors provided or required by an audio product can be
substantial. It is not unusual that the interconnectors available on an audio
device may occupy a substantial portion of the space at the rear and/or the
front panel of the device. In certain instances, the area required to
accommodate the interconnectors may essentially define the minimum size of the
audio product.
An object of the present invention is to mitigate
or obviate to some degree one or more problems associated with existing audio
processing devices, or to provide at least a useful alternative.
The above object is met by the combination of
features of the main claims; the sub-claims disclose further advantageous
embodiments of the invention.
One skilled in the art will derive from the
following description other objects of the invention. Therefore, the foregoing
statements of object are not exhaustive and serve merely to illustrate some of
the many objects of the present invention.
In a first main aspect, the invention provides an
audio signal processing device. The device comprises an input for receiving an
input signal; an output for transmitting an output signal; a switch module
adapted to electrically and/or electronically connect the input to the output;
wherein the switch module is adapted to select one of at least two different
switch pathways for connecting the input to the output dependent on a type of
the input signal.
In a second main aspect, the invention provides an
audio signal processing system. The system comprises an audio device; and an
audio signal processing device according to the first main aspect. The audio
signal processing device is electronically connectable with the audio device,
with an input adapted to receive an input signal from the audio device; wherein
the audio signal processing device further comprises a switch module adapted to
automatically select one of at least two different switch pathways for
connecting the input to an output of the audio signal processing device
dependent on a type of the input signal.
In a third main aspect, the invention provides an
audio signal processing system. The system comprises an audio device; and an
audio signal processing device according to the first main aspect. The audio
signal processing device is electronically connectable with the audio device,
with an output adapted to transmit an output signal to the audio device;
wherein the audio signal processing device further comprises a switch module
adapted to select one of at least two different switch pathways for connecting
the input to an output of the audio signal processing device according to a
user’s manual selection.
The summary of the invention does not necessarily
disclose all the features essential for defining the invention; the invention
may reside in a sub-combination of the disclosed features.
The foregoing and further features of the present
invention will be apparent from the following description of preferred
embodiments which are provided by way of example only in connection with the
accompanying figures, of which:
Figure 1 is a circuit diagram showing a first
embodiment of the audio signal processing device of the present invention;
and
Figure 2 is a circuit diagram showing a second
embodiment of the audio signal processing device of the present invention.
The following description is of preferred
embodiments by way of example only and without limitation to the combination of
features necessary for carrying the invention into effect.
Reference in this specification to "one embodiment"
or "an embodiment" means that a particular feature, structure, or
characteristic described in connection with the embodiment is included in at
least one embodiment of the invention. The appearances of the phrase "in one
embodiment" in various places in the specification are not necessarily all
referring to the same embodiment, nor are separate or alternative embodiments
mutually exclusive of other embodiments. Moreover, various features are
described which may be exhibited by some embodiments and not by others.
Similarly, various requirements are described which may be requirements for
some embodiments but not other embodiments.
It should be understood that the elements shown in
the figures, may be implemented in various forms of hardware, software or
combinations thereof. Preferably, these elements are implemented in a
combination of hardware and software on one or more appropriately programmed
general-purpose devices, which may include a processor, memory and input/output
interfaces.
In the claims hereof, any element expressed as a
means for performing a specified function is intended to encompass any way of
performing that function including, for example, a) a combination of circuit
elements that performs that function or b) software in any form, including,
therefore, firmware, microcode or the like, combined with appropriate circuitry
for executing that software to perform the function. The invention as defined
by such claims resides in the fact that the functionalities provided by the
various recited means are combined and brought together in the manner which the
claims call for. It is thus regarded that any means that can provide those
functionalities are equivalent to those shown herein.
The present invention relates to an audio signal
processing device which enables a selective connection, automatically and/or
manually, between an input and an output according to a required audio signal
type. This is advantageous in that it allows transmission of both digital audio
and analogue audio signals to and/or from an audio device, but negates the
needs to provide separate interconnectors for both types of signals at the
device as found in the conventional audio signal processing devices. By
integrating the analogue and the digital signals into a single pair of RCA
connectors, the user may manually select the preferred type of signal during
system use, or alternatively, the device may automatically detect, determine or
deduce the required signal type and subsequently, the device will connect the
inlet and outlet via the appropriate signal pathway. In addition to improved
ease and convenience in use, the present invention allows for a significant
reduction in the required space for accommodating the interconnectors at the
device, and thus facilitate a more compact design of audio signal processing
systems. This is particularly beneficial for small size, compact audio devices
that do not necessarily have sufficient space to accommodate both the analogue
and the digital RCA connectors.
Referring to Figure 1, shown is a circuit diagram of
an audio signal processing device 10 according to an embodiment of the present
invention. The audio signal processing device 10 is electronically connectable
with an external audio device (not shown) via an RCA connection comprising a
dual RCA connector 20. Specifically, the audio signal processing device 10
comprises an input 2 for receiving an input signal, and an output 4 for
transmitting an output signal. The input 2 comprises a first digital SPDIF
signal pathway 35 adapted to receive a digital audio signal generated by a
digital signal processing module 30, and a second analogue signal pathway 55
adapted to receive an analogue audio signal generated by an analogue processing
module 50. The output 4 comprises the RCA connector 20 for outputting either
the digital audio signal or the analogue audio signal. In this embodiment, the
digital signal processing module 30 further comprises a transformer 40 for
impedance matching purposes.
The audio signal processing device 10 further
comprises a switch module 60 adapted to electrically and/or electronically
connect the input 2 to the output 4. Specifically, the switch module 60 is
capable of selecting one of the two switch pathways, namely the digital SPDIF
signal pathway 35 and the analogue signal pathway 55, for connecting the input
2 to the output 4 dependent on the type of the input signal.
Dependent on the type of input signal, i.e. analogue
or digital, a user may be required to select the requisite signal pathway for
connecting the input 2 to the output 4. Upon the user’s manual selection, the
switch module 60 is adapted to select either the digital signal pathway 35 or
the analogue signal pathway 55.
The switch module 60 may comprise one or more of a
mechanical switch, an electronic switch and a software logic switch. For
example, the switch module 60 may include a mechanical relay and/or an
electronic multiplexer.
Specifically, the switch module 60 can be controlled
by a control unit 100 such as a microcomputer unit (MCU). The MCU 100 is
capable of instructing or controlling the switch module 60 to switch between
the two signal pathways and thus connect either the digital signal pathway 35
between the input 2 and the output 4 or to connect the analogue signal pathway
55 between the input 2 and the output 4 thereby transmitting the required audio
signal type to the output. Preferably, the MCU 100 is configured to disable,
e.g. power down or power off, either the digital signal processing module 30 or
the analogue signal processing module 50, dependent on which was not selected
by the user, for the purpose of power savings. More preferably, the MCU 100 may
comprise a storage means 102 such as a non-volatile memory adapted to store an
operation status of the switch module 60, for example, whether a digital or an
analogue signal pathway has been selected by the user and subsequently, to
maintain the corresponding operation of the switch module 60 for one or more
power cycles.
Although only two different switch pathways have
been illustrated in the figure, it will be appreciated that an audio signal
processing device having more than two signal pathways should also be
encompassed, as long as it is considered suitable and applicable by a skilled
person in this field without departing from the spirit and scope of the present
invention.
In addition, although a digital SPDIF pathway
comprising one connected channel is illustrated in the figure, it should be
understood that a digital SPDIF pathway having two separate channels of SPDIF,
or even one channel of SPDIF and an analogue mono output such as those being
used in a sub-woofer connection, should also be considered as being encompassed
within the scope of the invention.
Referring to Figure 2, shown is a circuit diagram of
an audio signal processing device 110 according to a second embodiment of the
present invention. Similar to the previous embodiment, the audio signal
processing device 110 is electronically connectable with an external audio
device via an RCA connection. In this embodiment, the device 110 comprises an
input 12 with a dual RCA connector 120 for receiving an input audio signal from
an audio signal processing device. The input audio signal can be either a
digital audio signal or an analogue audio signal.
The device 110 further comprises an output having
both a digital SPDIF signal pathway 135 and an analogue signal pathway 155
outputting a digital audio signal and an analogue audio signal, respectively.
The digital signal pathway 135 comprises a digital signal processing module 130
for processing the digital SPDIF signal, whereas the analogue signal pathway
155 comprises an analogue signal processing module 150 for processing the
analogue signal. The digital signal processing module 130 may further comprise
a transformer 140 for impedance matching purposes.
The device 110 also comprises a switch module,
although not shown in the figure, which is adapted to electrically and/or
electronically connect the input 12 to the output 14. Similar to the switch
module 160 as described in the previous embodiment, this switch module is
adapted to select one of the two switch pathways, namely the digital SPDIF
signal pathway 135 and the analogue signal pathway 155, for connecting the
input 12 to the output 14 dependent on the type of the input signal received at
the input RCA connector. Preferably, the switch module is adapted to
automatically select one of the two switch pathways dependent on a detection, a
determination or a deduction of the type of the input signal by the MCU 1100.
Specifically, the MCU 1100 may comprise a monitoring module adapted to detect
the input signal type, monitor the input signal type, determine a type of the
input signal, or even to deduce a type of the input signal.
In this embodiment, the monitoring module of the MCU
1100 is adapted to constantly or periodically monitor the digital signal
processing module 130 to check if its internal phase-locked loop (PLL) circuit
is locked to a valid SPDIF digital signal. If the PLL is not locked, the MCU
1100 will determine or deduce that the input signal is not a SPDIF signal, but
that it is an analogue audio signal. The MCU 1100 will control the switch
module to select the appropriate switch pathway between the input 12 and the
output 14 to convey the input signal to the analogue audio signal processor 150
which it automatically enables, i.e. powers up, for processing of the analogue
audio signal and thus outputting the analogue signal. On the contrary, if the
PLL is able to lock, the MCU may determine or deduce that this indicates that a
valid SPDIF digital signal is available and the MCU 1100 will automatically
maintain selection of the the digital signal pathway 135 to output a digital
type signal, and simultaneously disable or power off the analogue signal
processing module 150 to save power.
Because bandwidth of the two types of signals are
considerably different, any time taken for the switch module to switch between
the analog and digital pathways will not result in any noticeable audio noise
signal due to the SPDIF signal being played to the analog receiver as the
analog receiver is band limited to the audio bandwidth, i.e. approximately
20KHz, although this does vary a little between different types of systems, and
that the SPDIF signal has almost no signal power within the audio frequency
range.
Although only one channel of the digital SPDIF
pathway is illustrated in the figure, it is clearly understandable by a skilled
person that it is possible for the device to include two channels for the
digital SPDIF pathway, or one on each of the RCA connectors.
The present invention also relates to an audio
signal processing system. In one embodiment, the system comprises an audio
device; and an audio signal processing device as described above. The audio
signal processing device is electronically connectable with the audio device,
with an input adapted to receive an input signal from the audio device; wherein
the audio signal processing device further comprises a switch module adapted to
automatically select one of at least two switch pathways, namely a digital
audio signal pathway and an analogue audio signal pathway, for connecting the
input to an output of the audio signal processing device dependent on a type of
the input signal.
In a further embodiment, the audio signal processing
system comprises an audio device; and an audio signal processing device as
described above. The audio signal processing device is electronically
connectable with the audio device, with an output adapted to transmit an output
signal to the audio device; wherein the audio signal processing device further
comprises a switch module adapted to either one of a digital audio signal
pathway and an analogue signal pathway for connecting the input to an output of
the audio signal processing device according to the user’s manual
selection.
Claims (23)
- An audio signal processing device, comprising:an input for receiving an input signal;an output for transmitting an output signal;a switch module adapted to electrically and/or electronically connect the input to the output;wherein the switch module is adapted to select one of at least two different switch pathways for connecting the input to the output dependent on a type of the input signal.
- The audio signal processing device according to claim 1, wherein the input comprises a first signal pathway adapted to receive an audio signal of a first type and a second signal pathway adapted to receive an audio signal of a second, different type and the output comprises a RCA connector for outputting the audio signal of the first type or the audio signal of the second type.
- The audio signal processing device according to claim 1, wherein the input comprises a RCA connector for inputting an audio signal of a first type or an audio signal of a second, different type and the output comprises a first signal pathway for outputting the audio signal of the first type and a second signal pathway for outputting the audio signal of the second type.
- The audio signal processing device according to claim 1, wherein the switch module is adapted to automatically select one of the at least two different switch pathways dependent on a detection, a determination or a deduction of the type of the input signal.
- The audio signal processing device according to claim 1, wherein the switch module is adapted to select one of the at least two different switch pathways according to a user’s manual selection.
- The audio signal processing device according to claim 1, wherein the switch module is controlled by a control unit.
- The audio signal processing device according to claim 1, wherein at least one of the output and the input comprises a RCA connector.
- The audio signal processing device according to claim 1, wherein the input signal comprises a digital signal or an analogue signal.
- The audio signal processing device according to claim 1, wherein the switch module comprises at least one of a mechanical switch, an electronic switch and a software switch.
- The audio signal processing device according to claim 9, wherein the mechanical switch comprises a relay.
- The audio signal processing device according to claim 9, wherein the electronic switch comprises a multiplexer.
- The audio signal processing device according to claim 6, wherein the control unit comprises a monitoring module adapted to monitor the input signal type, determine a type of the input signal, or to deduce a type of the input signal.
- The audio signal processing device according to claim 12, wherein the monitoring module is adapted to monitor operation of a phase-locked loop (PLL) circuit.
- The audio signal processing device according to claim 6, wherein the control unit is adapted to detect, determine or deduce the input signal type, and when the detected input signal is a digital signal, the control unit is adapted to disable or power off an analogue signal processing module.
- The audio signal processing device according to claim 6, wherein the control unit is adapted to detect, determine or deduce the input signal type, and when the detected input signal is not a digital signal, the control unit is adapted to enable processing of an analogue signal.
- The audio signal processing device according to claim 6, wherein the control unit comprises a storage means adapted to store an operation status of the switch module.
- The audio signal processing device according to claim 16, wherein the control unit is adapted to maintain the stored operation status of the switch module for one or more power cycles.
- The audio signal processing device according to claim 1, further comprising a digital signal processor adapted to process a digital signal.
- The audio signal processing device according to claim 1, further comprising an analogue signal processor adapted to process an analogue signal.
- The audio signal processing device according to claim 18, wherein the digital signal processor comprises a transformer for impedance matching.
- The audio signal processing device according to claim 5, further comprising a triggering unit manually operable by the user to select one of the at least two different switch pathways.
- An audio signal processing system, comprising:an audio device; andan audio signal processing device according to any one of the preceding claims, the audio signal processing device being electronically connectable with the audio device, with an input adapted to receive an input signal from the audio device;wherein the audio signal processing device further comprises a switch module adapted to automatically select one of at least two different switch pathways for connecting the input to an output of the audio signal processing device dependent on a type of the input signal.
- An audio signal processing system, comprising:an audio device; andan audio signal processing device according to any one of claims 1 to 21, the audio signal processing device being electronically connectable with the audio device, with an output adapted to transmit an output signal to the audio device;wherein the audio signal processing device further comprises a switch module adapted to select one of at least two different switch pathways for connecting the input to an output of the audio signal processing device according to a user’s manual selection.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/081144 WO2016197340A1 (en) | 2015-06-10 | 2015-06-10 | An audio signal processing device |
| CN201580080841.0A CN107949993B (en) | 2015-06-10 | 2015-06-10 | Audio signal processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2015/081144 WO2016197340A1 (en) | 2015-06-10 | 2015-06-10 | An audio signal processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016197340A1 true WO2016197340A1 (en) | 2016-12-15 |
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ID=57503035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2015/081144 WO2016197340A1 (en) | 2015-06-10 | 2015-06-10 | An audio signal processing device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107949993B (en) |
| WO (1) | WO2016197340A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003274497A (en) * | 2002-03-19 | 2003-09-26 | Denon Ltd | Multi-channel audio reproducing apparatus |
| US20040160993A1 (en) * | 2003-02-14 | 2004-08-19 | Ganton Robert B. | System and method for multiplexing digital and analog signals using a single electrical connector |
| CN1823484A (en) * | 2003-05-14 | 2006-08-23 | G·西蒙斯三世 | Switching arrangement and method for communications platform |
| CN201498572U (en) * | 2009-07-28 | 2010-06-02 | 常州康尔达电子有限公司 | Multifunctional digital/analog audio and video/antenna amplifying switcher |
| CN104112955A (en) * | 2014-07-16 | 2014-10-22 | 广州艾飞网络科技有限公司 | Signal line with sound effect processing function |
| CN203968239U (en) * | 2014-07-15 | 2014-11-26 | 大连捷成实业发展有限公司 | A kind of audio signal commutation circuit |
| CN104501826A (en) * | 2014-11-28 | 2015-04-08 | 惠州聚创汇智科技开发有限公司 | Audio processing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19851998A1 (en) * | 1998-11-11 | 2000-05-18 | Philips Corp Intellectual Pty | Circuit arrangement for generating an output signal |
-
2015
- 2015-06-10 CN CN201580080841.0A patent/CN107949993B/en not_active Expired - Fee Related
- 2015-06-10 WO PCT/CN2015/081144 patent/WO2016197340A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003274497A (en) * | 2002-03-19 | 2003-09-26 | Denon Ltd | Multi-channel audio reproducing apparatus |
| US20040160993A1 (en) * | 2003-02-14 | 2004-08-19 | Ganton Robert B. | System and method for multiplexing digital and analog signals using a single electrical connector |
| CN1823484A (en) * | 2003-05-14 | 2006-08-23 | G·西蒙斯三世 | Switching arrangement and method for communications platform |
| CN201498572U (en) * | 2009-07-28 | 2010-06-02 | 常州康尔达电子有限公司 | Multifunctional digital/analog audio and video/antenna amplifying switcher |
| CN203968239U (en) * | 2014-07-15 | 2014-11-26 | 大连捷成实业发展有限公司 | A kind of audio signal commutation circuit |
| CN104112955A (en) * | 2014-07-16 | 2014-10-22 | 广州艾飞网络科技有限公司 | Signal line with sound effect processing function |
| CN104501826A (en) * | 2014-11-28 | 2015-04-08 | 惠州聚创汇智科技开发有限公司 | Audio processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107949993A (en) | 2018-04-20 |
| CN107949993B (en) | 2019-08-13 |
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