Envelope peak is positive value only?
Hello.
When inputting a sine wave of 1 Hz from the sine tone tool, the waveform through the envelope Peak tool has only a positive value.
Please see the image below.
Peak hold function seems to be operating against the absolute value of sine wave, is this a specification?
Thank you.
Audio Signal Processors
sigmastudio
peak
SigmaDSP Audio Processors
SigmaDSP
adau1701
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Hello Deou,
Yes, to develop an envelope of a signal you must obtain the absolute value of the signal then see if it is louder than an older peak or the current value after an old peak has decayed over time. So you will only get a positive DC value. You have no hold time and a very fast decay so it is able to follow the envelop of a 1Hz wave.
What are you trying to do? Perhaps I know a solution for what you need?
Dave T
Hello Mr.Dave.
I have understand and solved it.
It is the answer as expected.
Thank you.
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