SSRC
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<div style="max-width:62em" > | <div style="max-width:62em" > | ||
| − | High quality audio sample rate converter by [http://shibatch.sourceforge.net/ Naoki Shibata | + | <div {{BlueBox2|40|0|3px solid purple}} > |
| + | {{AvsPlusFullname}}<br> | ||
| + | Up-to-date documentation: [https://avisynthplus.readthedocs.io/en/latest/avisynthdoc/corefilters/ssrc.html https://avisynthplus.readthedocs.io] | ||
| + | </div> | ||
| + | |||
| + | |||
| + | High quality audio sample rate converter by [http://shibatch.sourceforge.net/ Naoki Shibata]. This filter should result in better audio quality than [[ResampleAudio]] when converting between 44100↔48000 Hz. | ||
<div {{BoxWidthIndent|52|1}} > | <div {{BoxWidthIndent|52|1}} > | ||
{{BoldColor|blue|120|“}}44.1kHz sampling rate is used for a CD, and 48kHz is used for a DVD... Converting between these frequencies is hard, because the ratio between these two frequencies is 147:160, which are not small numbers. Accordingly, we need a very long FIR filter in order not to degrade the sound quality during conversion. This program utilizes FFTs to apply the FIR filter in order to reduce the amount of computation.{{BoldColor|blue|120|”}} <sup>[http://shibatch.sourceforge.net/]</sup> | {{BoldColor|blue|120|“}}44.1kHz sampling rate is used for a CD, and 48kHz is used for a DVD... Converting between these frequencies is hard, because the ratio between these two frequencies is 147:160, which are not small numbers. Accordingly, we need a very long FIR filter in order not to degrade the sound quality during conversion. This program utilizes FFTs to apply the FIR filter in order to reduce the amount of computation.{{BoldColor|blue|120|”}} <sup>[http://shibatch.sourceforge.net/]</sup> | ||
</div> | </div> | ||
Unlike [[ResampleAudio]], '''SSRC''' doesn't work for arbitrary sample rate ratios. If it cannot handle resampling between the two sample rates, an error is raised. | Unlike [[ResampleAudio]], '''SSRC''' doesn't work for arbitrary sample rate ratios. If it cannot handle resampling between the two sample rates, an error is raised. | ||
| + | </div> | ||
== Syntax and Parameters == | == Syntax and Parameters == | ||
| + | <div style="max-width:62em" > | ||
{{FuncDef | {{FuncDef | ||
|SSRC(clip, int samplerate [, bool fast]) | |SSRC(clip, int samplerate [, bool fast]) | ||
}} | }} | ||
| + | |||
| + | :{{Par2|clip|clip|}} | ||
| + | ::Source clip. Audio is always converted to [[Float]]. | ||
| + | ::{{AvsPluscon}} no conversion is performed. Accepts [[Float]] audio only. | ||
:{{Par2|samplerate|int|}} | :{{Par2|samplerate|int|}} | ||
| Line 18: | Line 30: | ||
::Enable faster processing at slightly lower quality. | ::Enable faster processing at slightly lower quality. | ||
::Set this to ''false'' if you are doing large-ratio rate conversions (more than a factor 2). | ::Set this to ''false'' if you are doing large-ratio rate conversions (more than a factor 2). | ||
| + | </div> | ||
== Examples == | == Examples == | ||
| + | <div style="max-width:62em" > | ||
* Downsampling to 44.1 kHz: | * Downsampling to 44.1 kHz: | ||
<div {{BoxWidthIndent|24|2}} > | <div {{BoxWidthIndent|24|2}} > | ||
AviSource("c:\file.avi") | AviSource("c:\file.avi") | ||
SSRC(44100) | SSRC(44100) | ||
| + | </div> | ||
</div> | </div> | ||
== Changes == | == Changes == | ||
| + | <div style="max-width:62em" > | ||
{| border="1" | {| border="1" | ||
|- | |- | ||
Latest revision as of 05:56, 18 September 2022
AviSynth+
Up-to-date documentation: https://avisynthplus.readthedocs.io
High quality audio sample rate converter by Naoki Shibata. This filter should result in better audio quality than ResampleAudio when converting between 44100↔48000 Hz.
“44.1kHz sampling rate is used for a CD, and 48kHz is used for a DVD... Converting between these frequencies is hard, because the ratio between these two frequencies is 147:160, which are not small numbers. Accordingly, we need a very long FIR filter in order not to degrade the sound quality during conversion. This program utilizes FFTs to apply the FIR filter in order to reduce the amount of computation.” [1]
Unlike ResampleAudio, SSRC doesn't work for arbitrary sample rate ratios. If it cannot handle resampling between the two sample rates, an error is raised.
[edit] Syntax and Parameters
SSRC(clip, int samplerate [, bool fast])
- clip clip =
- int samplerate =
- Target sample rate.
- bool fast = true
- Enable faster processing at slightly lower quality.
- Set this to false if you are doing large-ratio rate conversions (more than a factor 2).
[edit] Examples
- Downsampling to 44.1 kHz:
AviSource("c:\file.avi")
SSRC(44100)
[edit] Changes
| v2.54 | Initial Release. |
Some parts of SSRC is:
Copyright (C) 2001-2003, Peter Pawlowski All rights reserved.
