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Method and device for switching original sound with one key
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A technology of original sound and SPI module, which is applied in the direction of speaker distribution signal, etc., which can solve the problems of multiple digital interactions, reducing the effect of switching original sound experience, and cutting off the current.
Active Publication Date: 2021-02-23
SHENZHEN CHUANGCHENG MICROELECTRONICS
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[0003] The traditional dry and wet switching is to make the original sound into a sound effect, and switch between sound effects and sound effects to achieve dry and wet switching. However, there are many digital interactions involved in the switching process between sound effects and sound effects. When there is an audio signal, there will be a cut-off phenomenon in the I2S (inter-IC Sound integrated circuit built-in audio bus) (the monitored sound will pause for a while), which reduces the experience of switching the original sound
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Embodiment 1
[0025] This embodiment is a method for switching the original sound with one key, including steps:
[0026] 1) The DSP processes the received first audio signal into a second audio signal, and transmits the second audio signal to the I2S module; The DSP starts before the I2S, The start-up time difference between the DSP and the I2S module is t1.
[0027] It should be pointed out that the DSP has a built-in sound effect algorithm, which can process the first audio signal as the original audio signal into the second audio signal with sound effect, and then transmit it through the I2S module as the audio signal transmission channel.
[0028] There is a time difference t1 between the start of the DSP and the I2S module.
[0029] 2) The DSP is not in a full-load state for processing instructions, that is, the DSP has a running time t2 of empty instructions.
[0030] In the prior art, when the sound effect state and the original sound state are switched, the audio signal of the I2...
Embodiment 2
[0035] Based on Embodiment 1 of the present invention, this embodiment provides a device based on the method of switching the original sound with one key, such as figure 2 As shown, it includes an audio input interface 1, an analog-to-digital converter (ADC) 2, an audio processor 3, a digital-to-analog converter (DAC) 4 and an audio output interface 5, and the audio input interface 1 communicates with the described audio through the analog-to-digital converter 2 The audio processor 3 is electrically connected, and the audio output interface 5 is electrically connected with the audio processor 3 through the digital-to-analog converter 4. The audio processor 3 has a built-in algorithm for switching the original sound with a key, and the device It has the function of switching the original sound with one key.
[0036] It should be pointed out that the audio input interface 1 and the audio output interface 5 are common 3.5mm audio interfaces, micro-USB, mini-USB, TYPE-C, lighting...
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Abstract
The invention discloses a one-key switching original sound method, which comprises the following steps that: 1) a DSP (Digital Signal Processor) processes a received first audio signal into a second audio signal, and transmits the second audio signal to an I2S (International Mobile Subscriber Server) module; The starting time difference of the DSP module and the I2S module is t1; 2) the DSP processing instruction is not in a full-load state, i.e., the DSP has a period of null instruction operation time t2; 3) an operation time period t2 of the null instruction is determined, a one-key originalsound request instruction sent by the SPI module is started within the null instruction operation time t2 in the DSP; at the moment, the I2S module is directly switched into the first audio signal without a cut-off phenomenon; According to the invention, the DSP processing instruction is set to be not in a full-load state, so that the DSP has an empty instruction operation time, and when a one-key original sound request instruction exists, the one-key original sound request instruction responds within the empty instruction operation time through adjustment, so that the I2S module does not generate a cutoff phenomenon when the original sound is switched.
Description
technical field [0001] The invention relates to the technical field of audio processing, in particular to a method and device for switching original sound with one key. Background technique [0002] With the popularization of webcasting and karaoke equipment, users sometimes need the original sound without sound effect processing in addition to sound effect processing, that is, dry and wet switching is required. Dry sound refers to the original sound that has not been processed, and wet sound is the sound that has been processed with sound effects. [0003] The traditional dry and wet switching is to make the original sound into a sound effect, and switch between sound effects and sound effects to achieve dry and wet switching. However, there are many digital interactions involved in the switching process between sound effects and sound effects. When there is an audio signal, there will be a cut-off phenomenon in the I2S (inter-IC Sound integrated circuit built-in audio bus...
Claims
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Application Information
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