Comments (1)
To do digital room correction you should first know how to simulate rooms. By placing a microphone in a room and recording the response of a sine sweep you can get the response for every frequency. When you have a dry signal you can multiply it by a recorded impulse response of any room to make it sound as if it was playing in that room. To do the opposite you record the impulse response of a room and inverse it remove the effect of an already 'wet' track.
NVDSP currently only does filtering using a biquad filter. There's no code doing impulse reponse, although that would be rad!
Apple Logic has an app bundled called 'Impulse Response', looking it up on youtube will probably help you understand the subject. There are also VSTs (software used by producers and artists) entirely based on simulation rooms, like Altiverb I think they also describe a little bit of the process in their promo video. Once you are able to simulate rooms I think inversing it will be not so hard.
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Related Issues (20)
- How to make custom audio EQ HOT 1
- Can we save audio file after applying filters? HOT 1
- Possible bug in NVDSP.mm when copying the results back to audio buffer HOT 4
- Thread safety and efficiency HOT 11
- 3-band EQ HOT 1
- Support with AVPlayer and AVAudioPlayer HOT 1
- Some Interruption when the app go to background HOT 3
- How to filter audio that is hosted on server HOT 3
- How to implement bass boost using high pass filter? any idea? HOT 3
- Issue with headphones HOT 1
- No tag 0.0.1 HOT 1
- Fail compile HOT 1
- No tag v0.0.1 HOT 1
- RingBuffer HOT 2
- Feed it the next song... HOT 8
- How to get audio data to use from microphone. HOT 1
- can i use directly with lib `FreeStreamer` to process audio HOT 7
- BandPass filter help HOT 1
- who can help me to build a 10-band-eq example?
- Is there anyway to use NVDSP in Swift?
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