| CPC H04R 3/04 (2013.01) [H03G 5/025 (2013.01); H04R 2430/01 (2013.01)] | 16 Claims |
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1. A signal processing method, comprising:
obtaining an audio signal;
in response to a first control signal, performing a first processing on the audio signal to obtain a first audio signal, the first processing being used to adjust a volume gain of the audio signal, the first control signal being a volume control signal;
based on the first control signal, performing a second processing on the first audio signal to obtain a second audio signal, the second processing being used to adjust a frequency gain of the first audio signal, wherein the performing the second processing on the first audio signal based on the first control signal to obtain the second audio signal includes performing a low-frequency extension processing on the first audio signal based on the first control signal to expand a frequency bandwidth at a current system volume level, and the low-frequency extension processing at the current system volume level is performed prior to an audio post-processing; and
performing the audio post-processing on the second audio signal,
wherein the performing the low-frequency extension processing on the first audio signal based on the first control signal to expand the frequency bandwidth at the current system volume level includes:
based on the first control signal, determining the current system volume level;
based on a first strategy, determining an extension amount of the first audio signal at the current system volume level; and
based on the extension amount, performing the low-frequency extension processing on the first audio signal to expand the frequency bandwidth at the current system volume level.
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