Aug-14-2020, 01:39 AM
Hi,
I'm trying to use matplotlib for audio waveforms to duplicate some of the features of Audacity. The two things I like are:
1. a moving line over the wave-form as the audio plays, associating position with sound
2. real-time graphing, revealing graph at the same time as the associated audio plays.
Graphing chunks in python is slow (bordering on slower than the audio), so I don't want to use python to play and graph chunk by chunk. Matplotlib graphs whole files nice and fast but I can't found matplotlib documentation that discusses either a "slow-motion plot" or a moving position line over a current graph.
My next efforts will focus on getting #1 by plotting a line on a second transparent layer above the graph but I welcome any informed suggestions as to how that might work or what's a better approach.
As for #2, I'm completely in the dark and would appreciate any suggestions on how to achieve it.
Thanks for the brain cycles,
Jeff
I'm trying to use matplotlib for audio waveforms to duplicate some of the features of Audacity. The two things I like are:
1. a moving line over the wave-form as the audio plays, associating position with sound
2. real-time graphing, revealing graph at the same time as the associated audio plays.
Graphing chunks in python is slow (bordering on slower than the audio), so I don't want to use python to play and graph chunk by chunk. Matplotlib graphs whole files nice and fast but I can't found matplotlib documentation that discusses either a "slow-motion plot" or a moving position line over a current graph.
My next efforts will focus on getting #1 by plotting a line on a second transparent layer above the graph but I welcome any informed suggestions as to how that might work or what's a better approach.
As for #2, I'm completely in the dark and would appreciate any suggestions on how to achieve it.
Thanks for the brain cycles,
Jeff
