Method and device for switching original sound with one key

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...

AI Technical Summary

Problems solved by technology

[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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