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29 #include "platform/audio/AudioUtilities.h"
30 #include "wtf/Assertions.h"
31 #include "wtf/MathExtras.h"
35 namespace AudioUtilities {
37 float decibelsToLinear(float decibels)
39 return powf(10, 0.05f * decibels);
42 float linearToDecibels(float linear)
44 // It's not possible to calculate decibels for a zero linear value since it would be -Inf.
45 // -1000.0 dB represents a very tiny linear value in case we ever reach this case.
50 return 20 * log10f(linear);
53 double discreteTimeConstantForSampleRate(double timeConstant, double sampleRate)
55 return 1 - exp(-1 / (sampleRate * timeConstant));
58 size_t timeToSampleFrame(double time, double sampleRate)
60 return static_cast<size_t>(round(time * sampleRate));
66 #endif // ENABLE(WEB_AUDIO)