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Signalsmith Audio's DSP Library
1.6.0
Useful C++ classes/templates for audio effects
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Signalsmith Audio's DSP Library
1.6.0
Useful C++ classes/templates for audio effects
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#include <spectral.h>
STFT processing, with input/output.
Before calling .ensureValid(index), you should make sure the input is filled up to index.
Inherits signalsmith::spectral::STFT< Sample >.
Methods | |
| ProcessSTFT (int inChannels, int outChannels, int windowSize, int interval, int historyLength=0) | |
| virtual void | processSpectrum (int) |
| Alter the spectrum, using input up to this point, for the output block starting from this point. More... | |
| void | resize (int inChannels, int outChannels, int windowSize, int interval, int historyLength=0) |
| Sets the input/output channels, FFT size and interval. More... | |
| void | reset (Sample value=Sample()) |
| int | latency () |
| Internal latency, including buffering samples for analysis. More... | |
| void | ensureValid (int i=0) |
| ProcessSTFT & | operator++ () |
| ProcessSTFT & | operator+= (int i) |
| ProcessSTFT & | operator-- () |
| ProcessSTFT & | operator-= (int i) |
 Methods inherited from signalsmith::spectral::STFT< Sample > | |
| void | setWindow (Window shape, bool rotateToZero=false) |
| Swaps between the default (Kaiser) shape and Approximate Confined Gaussian (ACG). More... | |
| STFT (int channels, int windowSize, int interval, int historyLength=0, int zeroPadding=0) | |
Parameters passed straight to .resize() More... | |
| void | resize (int nChannels, int windowSize, int interval, int historyLength=0, int zeroPadding=0) |
| Sets the channel-count, FFT size and interval. More... | |
| int | windowSize () const |
| int | fftSize () const |
| int | interval () const |
| decltype(fft.window()) | window () const |
| Returns the (analysis and synthesis) window. More... | |
| std::vector< Sample > | partialSumWindow (bool includeLatestBlock=true) const |
| Calculates the effective window for the partially-summed future output (relative to the most recent block) More... | |
| void | reset () |
Resets everything - since we clear the output sum, it will take windowSize samples to get proper output. More... | |
| template<class AnalysisFn > | |
| void | ensureValid (int i, AnalysisFn fn) |
| Generates valid output up to the specified index (or 0), using the callback as many times as needed. More... | |
| template<class AnalysisFn > | |
| void | ensureValid (AnalysisFn fn) |
| The same as above, assuming index 0. More... | |
| int | nextInvalid () const |
| Returns the next invalid index (a.k.a. the index of the next block) More... | |
| template<class Data > | |
| void | analyse (Data &&data) |
Analyse a multi-channel input, for any type where data[channel][index] returns samples. More... | |
| template<class Data > | |
| void | analyse (int c, Data &&data) |
| template<class Data > | |
| void | analyseRaw (Data &&data) |
| Analyse without windowing or zero-rotation. More... | |
| template<class Data > | |
| void | analyseRaw (int c, Data &&data) |
| int | bands () const |
| int | latency () |
Internal latency (between the block-index requested in .ensureValid() and its position in the output) More... | |
| STFT & | operator++ () |
| STFT & | operator+= (int i) |
| STFT & | operator-- () |
| STFT & | operator-= (int i) |
| Super::MutableView | operator++ (int postIncrement) |
| Super::MutableView | operator-- (int postIncrement) |
| Methods inherited from signalsmith::delay::MultiBuffer< Sample > | |
| MultiBuffer (int channels=0, int capacity=0) | |
| void | resize (int nChannels, int capacity, Sample value=Sample()) |
| void | reset (Sample value=Sample()) |
| Stride< false > | at (int offset) |
| Stride< true > | at (int offset) const |
| MutableView | view (int offset=0) |
| ConstView | view (int offset=0) const |
| ConstView | constView (int offset=0) const |
| MutableChannel | operator[] (int channel) |
| ConstChannel | operator[] (int channel) const |
| MultiBuffer & | operator++ () |
| MultiBuffer & | operator+= (int i) |
| MutableView | operator++ (int) |
| MutableView | operator+ (int i) |
| ConstView | operator+ (int i) const |
| MultiBuffer & | operator-- () |
| MultiBuffer & | operator-= (int i) |
| MutableView | operator-- (int) |
| MutableView | operator- (int i) |
| ConstView | operator- (int i) const |
Attributes | |
| signalsmith::delay::MultiBuffer< Sample > | input |
| Attributes inherited from signalsmith::spectral::STFT< Sample > | |
| Window | windowShape = Window::kaiser |
| Spectrum | spectrum |
| WindowedFFT< Sample > | fft |
Additional Inherited Members | |
| Types inherited from signalsmith::spectral::STFT< Sample > | |
| enum class | Window { kaiser , acg } |
| using | Spectrum = MultiSpectrum |
| Types inherited from signalsmith::delay::MultiBuffer< Sample > | |
| using | ConstChannel = typename Buffer< Sample >::ConstView |
| using | MutableChannel = typename Buffer< Sample >::MutableView |
| using | MutableView = View< false > |
| using | ConstView = View< true > |
| Static Attributes inherited from signalsmith::spectral::STFT< Sample > | |
| static constexpr Window | kaiser = Window::kaiser |
| static constexpr Window | acg = Window::acg |
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inline |
Internal latency, including buffering samples for analysis.
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inlinevirtual |
Alter the spectrum, using input up to this point, for the output block starting from this point.
Sub-classes should replace this with whatever processing is desired.
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inline |
Sets the input/output channels, FFT size and interval.
1.9.1