Cycling 74 » Topic: Viewing waveform and position during soundfile playback.

Viewing waveform and position during soundfile playback.

Mikelib — Mon, 11 Apr 2011 19:47:50 +0000

Hi all,

How do I playback a soundfile with a waveform display like a sequencer? ie. Waveform with cursor displaying current position in the file. I have looked at the waveform~ object but it doesn’t seem to be able to do what I want.

Thanks in advance,

Mike.

Re: Viewing waveform and position during soundfile playback.

n00b_meister — Mon, 11 Apr 2011 19:55:24 +0000

Have you used the [set] message to your own [buffer] object? I use a slider object, with a transparent background and its max val set to the buffer size, laid over the waveform object for this type of thing; or just use the selection start and end points

http://www.youtube.com/watch?v=QPNBPFAUDoM

Brendan

Re: Viewing waveform and position during soundfile playback.

driftpattern — Tue, 12 Apr 2011 01:33:04 +0000

heres how i do it: with [waveform~] you can draw a vertical line anywhere you want by sending a message like “line 999.99″ (where nines represent time in ms). the [groove~] object indicates its current position with a ramp of 0. to 1. from the right outlet. so multiplying the ramp value by total buffer length (ms) gives you the current position. make the line location a variable (line $1) with your product and you get a nice playhead with no extra ui objects.

[attachment=159178,2056]

Re: Viewing waveform and position during soundfile playback.

Mikelib — Tue, 12 Apr 2011 15:55:18 +0000

Thanks guys! Both very helpful replies. Exactly what I needed.