CLAM-Development
1.4.0
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This class performs filterbank analysis for Mel Frequency Cepstrum Coefficients (MFCC) computation. More...
#include <MelFilterBank.hxx>
Public Member Functions | |
MelFilterBank () | |
MelFilterBank (const MelFilterBankConfig &) | |
~MelFilterBank () | |
bool | Do () |
Supervised mode execution method (using ports) | |
bool | Do (const Spectrum &s, MelSpectrum &ms) |
Perform the filterbank analysis using the specified number of bands. | |
const ProcessingConfig & | GetConfig () const |
Configuration getter. | |
virtual const char * | GetClassName () const |
Override it in every subclass and retur the name of that class. | |
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bool | Configure (const ProcessingConfig &config) |
Configuration change method. | |
void | Start (void) |
Method to turn the object into running state. | |
void | Stop (void) |
Method to put the object out of running state When in execution mode, this method must be called before any further call to Configure() methods. | |
Processing () | |
virtual | ~Processing () |
virtual bool | CanProcessInplace () |
Override this method if your processing cannot process inplace. | |
bool | CanConsumeAndProduce () |
Check that Supervised Do() can be safely called. | |
void | ConsumeAndProduce () |
Acknoledges data tokens in published ports as read/writen by calling Produce() for all registered OutPorts and Consume() to all registered InPorts. | |
std::string | GetExecStateString () const |
bool | IsConfigured () const |
bool | IsRunning () const |
void | RegisterOutPort (OutPortBase *out) |
void | RegisterInPort (InPortBase *in) |
void | RegisterOutControl (OutControlBase *out) |
void | RegisterInControl (InControlBase *in) |
void | SetParent (Processing *p) |
void | SetNetworkBackLink (Network *network) |
virtual bool | ModifiesPortsAndControlsAtConfiguration () |
This method is used to determine if a given processing can change its interface of ports/controls after its construction (i.e. | |
bool | HasInPort (const std::string &name) |
bool | HasOutPort (const std::string &name) |
bool | HasInControl (const std::string &name) |
bool | HasOutControl (const std::string &name) |
InPortBase & | GetInPort (const std::string &name) |
OutPortBase & | GetOutPort (const std::string &name) |
InControlBase & | GetInControl (const std::string &name) |
OutControlBase & | GetOutControl (const std::string &name) |
InPortBase & | GetInPort (unsigned index) |
OutPortBase & | GetOutPort (unsigned index) |
InControlBase & | GetInControl (unsigned index) |
OutControlBase & | GetOutControl (unsigned index) |
unsigned | GetNInPorts () const |
unsigned | GetNOutPorts () const |
unsigned | GetNInControls () const |
unsigned | GetNOutControls () const |
const std::string & | GetConfigErrorMessage () const |
Returns a string describing configuration errors if any. | |
virtual bool | IsSyncSource () const |
Wether the processing is a sync source such as audio i/o device, or an audio callback hook (i.e. | |
virtual bool | SupportsVariableAudioSize () const |
This method reports whether the processing supports dynamic buffer-size host. |
Protected Member Functions | |
virtual bool | ConcreteConfigure (const ProcessingConfig &cfg) |
Configuration method interface. | |
TData | Mel (TData linFreq) |
Linear to Mel scale transformation. | |
void | InitializeTables () |
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virtual bool | ConcreteStart () |
Processing objects have to redefine this method when starting them implies some internal changes. | |
virtual bool | ConcreteStop () |
Processing objects have to redefine this method when stoping them implies some internal changes. | |
unsigned | BackendBufferSize () |
Given by the NetworkPlayer (backend) if exists. | |
unsigned | BackendSampleRate () |
Given by the NetworkPlayer (backend) if exists. | |
InControlRegistry & | GetInControls () |
Accessor to published Controls manager. | |
OutControlRegistry & | GetOutControls () |
Accessor to published Controls manager. | |
InPortRegistry & | GetInPorts () |
Accessor to published Ports manager. | |
OutPortRegistry & | GetOutPorts () |
Accessor to published Portss manager. | |
bool | AddConfigErrorMessage (const std::string &msg) |
Use this method to append a configuration errors to the processing when implementing ConcreteConfigure. | |
bool | AbleToExecute (void) const |
In debug-mode checks that the processing is configured and started. | |
template<typename ConcreteConfig > | |
void | CopyAsConcreteConfig (ConcreteConfig &concrete, const ProcessingConfig &abstract) const |
Helper template to convert a reference to a ProcessingConfig to the concrete ProcessingConfig specified on the first parameter. | |
void | SetExecState (ExecState state) |
Additional Inherited Members | |
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enum | ExecState { Unconfigured = 0, Ready, Running } |
Processing Object possible execution states. More... | |
typedef NullProcessingConfig | Config |
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ProcessingComposite * | mpParent |
Pointer to the parent (composite) processing object, or 0. | |
Network * | _network |
The parent network if any. |
This class performs filterbank analysis for Mel Frequency Cepstrum Coefficients (MFCC) computation.
It is designed to be compliant with similar functionality found in the speech processing software HTK v3.2.1.
No normalization or windowing of the spectrum data is performed prior to analysis.
Definition at line 67 of file MelFilterBank.hxx.
CLAM::MelFilterBank::MelFilterBank | ( | ) |
Definition at line 51 of file MelFilterBank.cxx.
References CLAM::Processing::Configure().
CLAM::MelFilterBank::MelFilterBank | ( | const MelFilterBankConfig & | cfg | ) |
Definition at line 58 of file MelFilterBank.cxx.
References CLAM::Processing::Configure().
CLAM::MelFilterBank::~MelFilterBank | ( | ) |
Definition at line 65 of file MelFilterBank.cxx.
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protectedvirtual |
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.
Reference | to the configuration object. |
true if the processing object is left in a consistent state, and can be executed.
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 134 of file MelFilterBank.cxx.
References CLAM::Processing::CopyAsConcreteConfig(), and InitializeTables().
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virtual |
Supervised mode execution method (using ports)
Implements CLAM::Processing.
Definition at line 69 of file MelFilterBank.cxx.
References CLAM::InPort< Token >::Consume(), CLAM::InPort< Token >::GetData(), CLAM::OutPort< Token >::GetData(), and CLAM::OutPort< Token >::Produce().
bool CLAM::MelFilterBank::Do | ( | const Spectrum & | s, |
MelSpectrum & | ms | ||
) |
Perform the filterbank analysis using the specified number of bands.
s | Input spectrum from FFT transform |
ms | Output filterbank coefficients |
Definition at line 79 of file MelFilterBank.cxx.
References CLAM::Processing::AbleToExecute(), CLAM_ASSERT, CLAM::EScale::eLinear, CLAM::Array< T >::Resize(), CLAM::Array< T >::SetSize(), and CLAM::Array< T >::Size().
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inlinevirtual |
Override it in every subclass and retur the name of that class.
Implements CLAM::Processing.
Definition at line 94 of file MelFilterBank.hxx.
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inlinevirtual |
Configuration getter.
Gets the configuration parameters used to create the object.
Reimplemented from CLAM::Processing.
Definition at line 89 of file MelFilterBank.hxx.
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protected |
Definition at line 153 of file MelFilterBank.cxx.
References Mel(), CLAM::Array< T >::Resize(), and CLAM::Array< T >::SetSize().
Referenced by ConcreteConfigure().
Linear to Mel scale transformation.
linFreq | Frequency in Hz. |
Definition at line 141 of file MelFilterBank.cxx.
Referenced by InitializeTables().