CN112562755A - Voice playing method and device - Google Patents

Voice playing method and device Download PDF

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Publication number
CN112562755A
CN112562755A CN201910854865.7A CN201910854865A CN112562755A CN 112562755 A CN112562755 A CN 112562755A CN 201910854865 A CN201910854865 A CN 201910854865A CN 112562755 A CN112562755 A CN 112562755A
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data file
module
pcm format
voice
prompt tone
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隋星光
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Hisense Visual Technology Co Ltd
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Hisense Visual Technology Co Ltd
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters 
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/162—Interface to dedicated audio devices, e.g. audio drivers, interface to CODECs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/16—Sound input; Sound output
    • G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10546—Audio or video recording specifically adapted for audio data

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

The invention discloses a voice playing method and a voice playing device, wherein a memory module stores pre-recorded audio data files, so that after a DMA (direct memory access) module receives a prompt tone broadcasting instruction, a data file in a PCM (pulse code modulation) format corresponding to the prompt tone broadcasting instruction can be directly selected from the audio data files according to the prompt tone broadcasting instruction, and the selected data file in the PCM format is transmitted to a voice module, so that the voice module can play the corresponding prompt tone. This makes it possible to eliminate the steps of selecting an audio file in the MP3 or WAV format and decoding the audio file in the MP3 or WAV format into a data file in the PCM format. When the voice playing method or system is applied to the ADAS system, the CPU in the ADAS system can not perform the audio decoding processing any more, so that the resources of the CPU are saved, and the real-time performance and the safety of the ADAS system are improved.

Description

Voice playing method and device
Technical Field
The invention relates to the technical field of driving assistance, in particular to a voice playing method and device.
Background
An Advanced Driving Assistance System (ADAS) senses the surrounding environment at any time during the Driving of an automobile by using various sensors (such as millimeter wave radar, laser radar, monocular/binocular cameras and satellite navigation) installed on the automobile, collects data, identifies, detects and tracks static and dynamic objects, performs systematic operation and analysis by combining with navigator map data, and performs voice prompt on a driver, so that the driver can be aware of possible things in advance, and the comfort and safety of automobile Driving are effectively improved.
Disclosure of Invention
The embodiment of the invention provides a voice playing method and a voice playing device, which are used for carrying out voice prompt.
The embodiment of the invention provides a voice playing method, which comprises the following steps:
the DMA module receives a prompt tone broadcast instruction;
the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcasting instruction from audio data files stored in a storage module, and transmits the selected data file in the PCM format to a voice module so that the voice module broadcasts a corresponding prompt tone; the audio data file stored by the storage module is pre-recorded, and the audio data file comprises: the data files in the PCM format correspond to a plurality of different prompt tones; one the prompt tone corresponds to one the prompt tone reports the instruction.
Optionally, in an embodiment of the present invention, the transmitting the selected data file in the PCM format to the voice module includes:
and transmitting the selected data file in the PCM format to an I2S bus, buffering the data file by the I2S bus, and transmitting the data file to the voice module through a power amplification module.
Optionally, in this embodiment of the present invention, before the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcast instruction from the audio data files stored in the storage module, the method further includes:
the memory module, the I2S bus, and the power amplification module are initialized.
Optionally, in an embodiment of the present invention, the method for storing a pre-recorded audio data file by the storage module includes:
recording data files in PCM format corresponding to a plurality of different prompt tones; wherein, each data file in PCM format comprises a left channel and a right channel;
compressing all the recorded data files in the PCM format, and storing the compressed data files;
when the storage module is initialized, the compressed data file in the PCM format is decompressed to the storage module and stored.
An embodiment of the present invention further provides a voice playing apparatus, including:
the storage module is used for storing the pre-recorded audio data file; wherein the audio data file comprises: the data files in the PCM format correspond to a plurality of different prompt tones;
the DMA module is used for receiving a prompt tone broadcasting instruction, selecting a data file in a PCM format corresponding to the prompt tone broadcasting instruction from the audio data files, and transmitting the selected data file in the PCM format to the voice module; one prompt tone corresponds to one prompt tone broadcasting instruction;
and the voice module is used for receiving the data file in the PCM format output by the DMA module and playing corresponding prompt tone according to the received data file in the PCM format.
Optionally, in this embodiment of the present invention, the voice playing system further includes: an I2S bus and a power amplification module;
the DMA module is used for transmitting the selected data file in the PCM format to an I2S bus;
the I2S bus is used for receiving and buffering the PCM format data file transmitted by the DMA module, and then transmitting the buffered PCM format data file to the voice module through the power amplification module.
Optionally, in this embodiment of the present invention, the storage module is further configured to initialize before the DMA module receives a prompt tone broadcast instruction;
the I2S bus is also used for initialization before the DMA module receives a prompt tone broadcast instruction;
the power amplification module is also used for initializing before the DMA module receives a prompt tone broadcast instruction.
The embodiment of the invention also provides a driving assistance system which comprises the voice playing device.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the above-mentioned voice playing method.
The embodiment of the invention also provides computer equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of the voice playing method when executing the program.
The invention has the following beneficial effects:
in the voice playing method and device provided by the embodiment of the invention, the pre-recorded audio data file is stored in the storage module, and the audio data file can comprise a plurality of data files in PCM format corresponding to different prompt tones. After the DMA module receives the prompt tone broadcast instruction, the data file in the PCM format corresponding to the prompt tone broadcast instruction can be directly selected from the audio data file according to the prompt tone broadcast instruction, and the selected data file in the PCM format is transmitted to the voice module, so that the voice module can play the corresponding prompt tone. This makes it possible to eliminate the steps of selecting an audio file in the MP3 or WAV format and decoding the audio file in the MP3 or WAV format into a data file in the PCM format. When the voice playing method or system is applied to the ADAS system, the CPU in the ADAS system can not perform the audio decoding processing any more, so that the resources of the CPU are saved, and the real-time performance and the safety of the ADAS system are improved.
Drawings
Fig. 1 is a flowchart of a voice playing method according to an embodiment of the present invention;
fig. 2 is a detailed flowchart of a voice playing method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voice playing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
It should be noted that the sizes and shapes of the figures in the drawings are not to be considered true scale, but are merely intended to schematically illustrate the present invention. And the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.
The general voice playing device comprises: a CPU (Central Processing Unit), an I2C (Inter-Integrated Circuit) bus, an I2S (Inter-IC Sound) bus (i.e., an audio bus built in an Integrated Circuit), an audio decoding module, a DDR (Double Data Synchronous Dynamic Random-Access Memory) module, a DMA (Direct Memory Access) module, a power amplifying module, and a speaker.
Wherein, the process of voice prompt of the voice playing device is as follows: the power amplification module and the I2S bus are configured through the I2C bus, then the CPU reads audio files in MP3 or WAV format from the file system, and the audio decoding module is controlled by the CPU to decode the read audio files in MP3 or WAV format into PCM format data files and store the PCM format data files in the DDR module. Then, the data file in the PCM format is transmitted to the buffer memory of the I2S bus through the DMA module, and then transmitted to the speaker through the power amplification module, and finally the sound is emitted from the speaker. However, when the CPU controls the audio decoding module to decode an audio file in a format such as MP3 or WAV, a part of the resources of the CPU is occupied. Because the ADAS system has a high real-time requirement, more CPU resources need to be left to the video processing and analysis algorithms, otherwise the real-time performance of the ADAS system may be reduced, resulting in reduced security.
In view of this, an embodiment of the present invention provides a voice playing method, as shown in fig. 1, which may include:
s101, receiving a prompt tone broadcast instruction by a DMA module;
s102, the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcasting instruction from the audio data files stored in the storage module, and transmits the selected data file in the PCM format to the voice module, so that the voice module broadcasts the corresponding prompt tone; the audio data file stored by the storage module is pre-recorded, and the audio data file comprises: the data files in the PCM format correspond to a plurality of different prompt tones; one warning tone corresponds to one warning tone broadcast instruction.
In the voice playing method provided by the embodiment of the present invention, the pre-recorded audio data file is stored in the storage module, and the audio data file may include a plurality of data files in PCM format corresponding to different alert tones. After the DMA module receives the prompt tone broadcast instruction, the data file in the PCM format corresponding to the prompt tone broadcast instruction can be directly selected from the audio data file according to the prompt tone broadcast instruction, and the selected data file in the PCM format is transmitted to the voice module, so that the voice module can play the corresponding prompt tone. This makes it possible to eliminate the steps of selecting an audio file in the MP3 or WAV format and decoding the audio file in the MP3 or WAV format into a data file in the PCM format. When the voice playing method is applied to the ADAS system, the CPU in the ADAS system can not perform the audio decoding processing any more, so that the resources of the CPU are saved, and the real-time performance and the safety of the ADAS system are improved.
In a specific implementation, in the embodiment of the present invention, transmitting the data file in the selected PCM format to the voice module may include:
and transmitting the selected data file in the PCM format to an I2S bus, buffering the data file by an I2S bus and transmitting the data file to a voice module through a power amplification module.
In particular implementations, the voice module may include a speaker in embodiments of the invention.
In specific implementation, in the embodiment of the present invention, before the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcast instruction from the audio data files stored in the storage module, the method may further include: the memory module, I2S bus, and power amplification module are initialized. Further, the ADAS system may be enabled to initialize the storage module, the I2S bus, and the power amplification module via the I2C bus, respectively. Further, before initializing the memory module, the I2S bus, and the power amplification module, the method further includes: the I2C bus is initialized.
In particular implementations, the modules described above may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects within an embodiment of the invention. For example, the power amplification module may include a power amplifier. In practical applications, the structure and operation principle of the power amplifier may be substantially the same as those in the prior art, and are not limited herein.
In specific implementation, before the DMA module receives the prompt tone report instruction, the method in the embodiment of the present invention may further include: initializing the processing threads corresponding to different preset prompt tones. Wherein different prompt tones set different processing threads. For example, the alert tone corresponding to the warning message sets one processing thread, and the alert tone corresponding to the adjusted volume (increasing the volume or decreasing the volume) sets another processing thread, so that the two threads can be prevented from interfering with each other.
In a specific implementation, in an embodiment of the present invention, a method for storing a pre-recorded audio data file by a storage module may include:
recording data files in PCM format corresponding to a plurality of different prompt tones; wherein, each PCM format data file comprises a left channel and a right channel;
compressing all recorded data files in the PCM format, and storing the compressed data files; the data file in the PCM format can be compressed by adopting a quick-lz equal compression algorithm, and the compressed file is copied to a root file system of the ADAS system;
when the storage module is initialized, the compressed data file in the PCM format is decompressed to the storage module and stored.
The following describes the above-mentioned voice playing method provided by the embodiment of the present invention through a specific embodiment. The reader should appreciate that the specific process is not so limited.
As shown in fig. 2, the voice playing method provided in the embodiment of the present invention may include the following steps:
s201, initializing the I2C bus. Specifically, registers of the I2C bus are accessed by MMAP function to initialize the I2C bus.
S202, initializing the memory module, the I2S bus and the power amplification module through the I2C bus respectively.
Specifically, the register of the read-write I2S bus is driven through the I2C bus to initialize the I2S bus. The parameters of the I2S bus, such as data bit width, transmission frequency and the like, are mainly configured.
Specifically, the registers of the read-write power amplification module are driven through the I2C bus to initialize the power amplification module. The power amplifier module is mainly configured with parameters such as volume output, sound channels and the like.
Specifically, the compressed data file in the PCM format is decompressed to a storage module (i.e., a specified location of the memory), and the data file in the PCM format is mapped to a broadcast message corresponding to the alert tone. The storage module may be a continuous memory space that has been initialized when the ADAS system is started.
And S203, the DMA module receives a prompt tone broadcast instruction.
And S204, the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcasting instruction from pre-recorded audio data files stored in the storage module according to the prompt tone broadcasting instruction, transmits the selected data file in the PCM format to an I2S bus, caches the data file through the I2S bus, and transmits the data file to a loudspeaker through a power amplifier, so that the loudspeaker plays the corresponding prompt tone.
Specifically, the DMA module enables the power amplifier and the speaker according to the alert tone broadcast command. Thereafter, the DMA module is enabled and relevant parameters (e.g., parameters such as source and destination addresses) of the DMA module are configured. And then, transmitting the selected data file in the PCM format to an I2S bus, buffering the data file by an I2S bus, and transmitting the data file to a loudspeaker through a power amplifier, so that the loudspeaker plays corresponding prompt tones.
Based on the same inventive concept, an embodiment of the present invention further provides a voice playing apparatus, as shown in fig. 3, including:
a storage module 301, configured to store a pre-recorded audio data file; wherein the audio data file includes: the data files in the PCM format correspond to a plurality of different prompt tones;
the DMA module 302 is configured to receive the alert sound broadcast instruction, select a data file in the PCM format corresponding to the alert sound broadcast instruction from the audio data file, and transmit the selected data file in the PCM format to the voice module 303; one prompt tone corresponds to one prompt tone broadcasting instruction;
the voice module 303 is configured to receive the data file in the PCM format output by the DMA module 302, and play a corresponding prompt tone according to the received data file in the PCM format.
In the voice playing apparatus provided in the embodiment of the present invention, the pre-recorded audio data file is stored in the storage module, and the audio data file may include a plurality of data files in PCM format corresponding to different alert tones. After the DMA module receives the prompt tone broadcast instruction, the data file in the PCM format corresponding to the prompt tone broadcast instruction can be directly selected from the audio data file according to the prompt tone broadcast instruction, and the selected data file in the PCM format is transmitted to the voice module, so that the voice module can play the corresponding prompt tone. This makes it possible to eliminate the steps of selecting an audio file in the MP3 or WAV format and decoding the audio file in the MP3 or WAV format into a data file in the PCM format. When the voice playing device is applied to the ADAS system, the CPU in the ADAS system can not perform the audio decoding processing any more, so that the resources of the CPU are saved, and the real-time performance and the safety of the ADAS system are improved.
In a specific implementation, in the embodiment of the present invention, the voice playing system further includes: an I2S bus and a power amplification module; the DMA module is used for transmitting the selected data file in the PCM format to the I2S bus. The I2S bus is used for receiving and buffering the PCM formatted data file transmitted by the DMA module, and then transmitting the buffered PCM formatted data file to the voice module through the power amplification module.
In specific implementation, in the embodiment of the present invention, the storage module is further configured to initialize before the DMA module receives the prompt tone broadcast instruction.
In practical implementation, in the embodiment of the present invention, the I2S bus is further used for initialization before the DMA module receives the prompt tone broadcast command.
In specific implementation, in the embodiment of the present invention, the power amplification module is further configured to initialize before the DMA module receives the alert tone broadcast instruction.
Based on the same inventive concept, the embodiment of the invention also provides a driving assistance system, which comprises the voice playing device. The principle of the driving assistance system for solving the problem is similar to that of the voice playing device, so the implementation of the driving assistance system can be referred to the implementation of the voice playing device, and the repeated points are not described herein again.
In particular, in the embodiment of the present invention, the driving assistance system may be an ADAS system.
Based on the same inventive concept, the embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and the program, when executed by a processor, implements the steps of any of the above-mentioned voice playing methods provided by the embodiment of the present invention. In particular, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
Based on the same inventive concept, an embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements any of the steps of the voice playing method provided by the embodiment of the present invention when executing the program.
In the voice playing method and device provided by the embodiment of the invention, the pre-recorded audio data file is stored in the storage module, and the audio data file can comprise a plurality of data files in PCM format corresponding to different prompt tones. After the DMA module receives the prompt tone broadcast instruction, the data file in the PCM format corresponding to the prompt tone broadcast instruction can be directly selected from the audio data file according to the prompt tone broadcast instruction, and the selected data file in the PCM format is transmitted to the voice module, so that the voice module can play the corresponding prompt tone. This makes it possible to eliminate the steps of selecting an audio file in the MP3 or WAV format and decoding the audio file in the MP3 or WAV format into a data file in the PCM format. When the voice playing method or system is applied to the ADAS system, the CPU in the ADAS system can not perform the audio decoding processing any more, so that the resources of the CPU are saved, and the real-time performance and the safety of the ADAS system are improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A method for playing speech, comprising:
the DMA module receives a prompt tone broadcast instruction;
the DMA module selects a data file in a PCM format corresponding to the prompt tone broadcasting instruction from audio data files stored in a storage module, and transmits the selected data file in the PCM format to a voice module so that the voice module broadcasts a corresponding prompt tone; the audio data file stored by the storage module is pre-recorded, and the audio data file comprises: the data files in the PCM format correspond to a plurality of different prompt tones; one the prompt tone corresponds to one the prompt tone reports the instruction.
2. The voice playing method according to claim 1, wherein said transmitting the selected data file in PCM format to a voice module comprises:
and transmitting the selected data file in the PCM format to an I2S bus, buffering the data file by the I2S bus, and transmitting the data file to the voice module through a power amplification module.
3. The voice playing method according to claim 2, wherein before the DMA module selects the data file in the PCM format corresponding to the alert tone broadcast command from the audio data files stored in the storage module, the method further comprises:
the memory module, the I2S bus, and the power amplification module are initialized.
4. A voice playback method as claimed in any one of claims 1 to 3, wherein the method of storing a pre-recorded audio data file by the storage module comprises:
recording data files in PCM format corresponding to a plurality of different prompt tones; wherein, each data file in PCM format comprises a left channel and a right channel;
compressing all the recorded data files in the PCM format, and storing the compressed data files;
when the storage module is initialized, the compressed data file in the PCM format is decompressed to the storage module and stored.
5. A voice playback apparatus, comprising:
the storage module is used for storing the pre-recorded audio data file; wherein the audio data file comprises: the data files in the PCM format correspond to a plurality of different prompt tones;
the DMA module is used for receiving a prompt tone broadcasting instruction, selecting a data file in a PCM format corresponding to the prompt tone broadcasting instruction from the audio data files, and transmitting the selected data file in the PCM format to the voice module; one prompt tone corresponds to one prompt tone broadcasting instruction;
and the voice module is used for receiving the data file in the PCM format output by the DMA module and playing corresponding prompt tone according to the received data file in the PCM format.
6. The voice playback apparatus of claim 5, wherein the voice playback system further comprises: an I2S bus and a power amplification module;
the DMA module is used for transmitting the selected data file in the PCM format to an I2S bus;
the I2S bus is used for receiving and buffering the PCM format data file transmitted by the DMA module, and then transmitting the buffered PCM format data file to the voice module through the power amplification module.
7. The voice playback device according to claim 5, wherein the storage module is further configured to initialize before the DMA module receives an alert tone broadcast instruction;
the I2S bus is also used for initialization before the DMA module receives a prompt tone broadcast instruction;
the power amplification module is also used for initializing before the DMA module receives a prompt tone broadcast instruction.
8. A driving assist system characterized by comprising the voice playback apparatus according to any one of claims 5 to 7.
9. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the speech playback method of any one of claims 1 to 4.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the speech playback method according to any of claims 1-4 are implemented when the program is executed by the processor.
CN201910854865.7A 2019-09-10 2019-09-10 Voice playing method and device Pending CN112562755A (en)

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Application Number Priority Date Filing Date Title
CN201910854865.7A CN112562755A (en) 2019-09-10 2019-09-10 Voice playing method and device

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CN112562755A true CN112562755A (en) 2021-03-26

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