CLAM::CepstralTransform Class Reference
#include <CepstralTransform.hxx>
Detailed Description
This class performs the cepstral transform on a set of filterbank coefficients in order to obtain the corresponding Mel Frequency Cepstral Coefficients (MFCC).It is designed to be compliant with similar functionality found in the speech processing software HTK v3.2.1.
No liftering of the coefficients is performed after transformation.
- See also:
- CLAM::MelFilterBank
Definition at line 63 of file CepstralTransform.hxx.
Public Member Functions | |
| CepstralTransform () | |
| CepstralTransform (const CepstralTransformConfig &cfg) | |
| bool | Do () |
| Supervised mode execution method (using ports). | |
| bool | Do (const MelSpectrum &melCoeffs, MelCepstrum &cepsCoeffs) |
| Performs the cepstral transform producing the specified number of MFCC coefficients. | |
| const ProcessingConfig & | GetConfig () const |
| Configuration getter. | |
| const char * | GetClassName () const |
| Override it in every subclass and retur the name of that class. | |
Protected Member Functions | |
| bool | ConcreteConfigure (const ProcessingConfig &cfg) |
| Configuration method interface. | |
| bool | ConcreteStart () |
| Processing objects have to redefine this method when starting them implies some internal changes. | |
Constructor & Destructor Documentation
| CLAM::CepstralTransform::CepstralTransform | ( | ) |
| CLAM::CepstralTransform::CepstralTransform | ( | const CepstralTransformConfig & | cfg | ) |
Member Function Documentation
| bool CLAM::CepstralTransform::Do | ( | ) | [virtual] |
Supervised mode execution method (using ports).
- Returns:
- A boolean telling whether it has been output
Implements CLAM::Processing.
Definition at line 73 of file CepstralTransform.cxx.
| bool CLAM::CepstralTransform::Do | ( | const MelSpectrum & | melCoeffs, | |
| MelCepstrum & | cepsCoeffs | |||
| ) |
Performs the cepstral transform producing the specified number of MFCC coefficients.
- Parameters:
-
melCoeffs Input filterbank coefficients cepsCoeffs Output MFCC coefficients
- Returns:
- True is computation was successfull, false otherwise
Definition at line 88 of file CepstralTransform.cxx.
References CLAM::Processing::AbleToExecute(), and PI.
| const ProcessingConfig& CLAM::CepstralTransform::GetConfig | ( | ) | const [inline, virtual] |
Configuration getter.
Gets the configuration parameters used to create the object.
- Returns:
- Const reference to the configuration object. The usual way to perform a configuration change in the processing object is to take a copy of this reference, to change it and to send it with the Configure method. If not overriden, it returns a NullProcessingConfig.
Reimplemented from CLAM::Processing.
Definition at line 84 of file CepstralTransform.hxx.
| const char* CLAM::CepstralTransform::GetClassName | ( | ) | const [inline, virtual] |
Override it in every subclass and retur the name of that class.
Implements CLAM::Processing.
Definition at line 89 of file CepstralTransform.hxx.
| bool CLAM::CepstralTransform::ConcreteConfigure | ( | const ProcessingConfig & | ) | [protected, virtual] |
Configuration method interface.
The Processing base class forces all the concrete classes derived from it to implement this method, which must actually perform the specific configuration tasks.
Note that the user can not call this method directly. He will use Configure instead. The argument is expected to be an object of the necesary concrete configuration class.
- Parameters:
-
Reference to the configuration object.
- Returns:
- false if the object is not yet fully configured. (For example, if some important configuration attribute such as number of ports was set to zero in the config object)
- Exceptions:
-
This method must throw a bad_cast exception if the argument is not an object of the expected configuration class.
Reimplemented from CLAM::Processing.
Definition at line 63 of file CepstralTransform.cxx.
References CLAM::Processing::CopyAsConcreteConfig().
| bool CLAM::CepstralTransform::ConcreteStart | ( | void | ) | [protected, virtual] |
Processing objects have to redefine this method when starting them implies some internal changes.
ie: adquiring resources.
- Returns:
- Whether start changes have been successful
Reimplemented from CLAM::Processing.
Definition at line 83 of file CepstralTransform.cxx.
The documentation for this class was generated from the following files:
