Thanks for the reply. This might be a silly question, but is there an equation I can use to reliably calculate the actual frequency range of each bin returned by the analyser? I get an array of decibel values but I don't know exactly what frequencies they correspond to.
Matt On Tue, Apr 12, 2016 at 7:32 PM, Raymond Toy <r...@google.com> wrote: > > > On Tue, Apr 12, 2016 at 2:24 PM, Matt Diamond <mdiam...@jhu.edu> wrote: > >> 1) Is it possible to do a non-realtime spectral analysis of a >> BufferSource using an AnalyserNode with an OfflineAudioContext? >> > > Yes, but you probably need to use suspend/resume to get correct timing. > >> >> 2) Is it possible for me to use a PeriodicWave to convert an array of >> frequency data from the Analyser Node back into a time-domain waveform? It >> seems like this isn't possible. >> > > Right. The analyser loses the phase information so you can't get the > original back. > >> >> Basically I'd like to come up with a web-based version of the spectral >> averaging technique that R Luke DuBois employed on Timelapse... averaging >> the spectral content of an entire buffer and then reproducing that content >> as a sustained drone. Is that possible yet with the Web Audio API as it >> currently exists? >> >> Thanks, >> Matt Diamond >> > >
