͑i$+XSSKJr SSKrSSKJrJrJr SSKrSSKJr SSK J r SSK J r \(a \"S\\ 5rSSSjjrSSS jjrSSS jjrSSS jjrSSS jjrSSS jjrSSSjjrg)) annotationsN) TYPE_CHECKINGLiteralTypeVar)Tensor)Variable)Value_TensorOrFloatcPU(a^[U[[[45(aS[R "SUS- -5-$S[ R "SUS- -5-$SnSnX- U- nSnXR- U- n[ R"S5S- n[U[[[45(aMU[R"X- S -5U- -nX:RUR5n X-US U - --nU$X:a!U[ R"X- S -5U- -nU$) aConvert Hz to Mels. Args: freq (Union[Tensor, float]): The input tensor with arbitrary shape. htk (bool, optional): Use htk scaling. Defaults to False. Returns: Union[Tensor, float]: Frequency in mels. Examples: .. code-block:: python >>> import paddle >>> val = 3.0 >>> htk_flag = True >>> mel_paddle_tensor = paddle.audio.functional.hz_to_mel( ... paddle.to_tensor(val), htk_flag) F@?@竪P@@@皙@;@绽|=) isinstancerrr paddlelog10mathlogastypedtype) freqhtkf_minf_spmels min_log_hz min_log_mellogsteptargetmasks b/var/www/html/banglarbhumi/venv/lib/python3.13/site-packages/paddle/audio/functional/functional.py hz_to_melr(s1* dVXu5 6 6FLLte|);<< <DJJsTE\'9:: : E D LD DJ%-Khhsmd"G$5122 &**T%6%>?'I I !))$**5}t H   K  $*;e*C!Dw!NND KcU(aSSUS- -S- -$SnSnX#U--nSnXR- U- n[R"S5S - n[U[[[ 45(aJU[ R"XpU- -5-nX:RUR5n X-US U - --nU$X:aU[R"XpU- -5-nU$) aConvert mel bin numbers to frequencies. Args: mel (Union[float, Tensor]): The mel frequency represented as a tensor with arbitrary shape. htk (bool, optional): Use htk scaling. Defaults to False. Returns: Union[float, Tensor]: Frequencies in Hz. Examples: .. code-block:: python >>> import paddle >>> val = 3.0 >>> htk_flag = True >>> mel_paddle_tensor = paddle.audio.functional.mel_to_hz( ... paddle.to_tensor(val), htk_flag) ... r$@r r rrrrrr) rrrrrr rexprr) melrrr freqsr"r#r$r%r&s r' mel_to_hzr/Ss* v.455 E D 3J EJ%-Khhsmd"G#%011fjj+4E)FGG!))#))4  H!   L  ';5F*G!HHE Lr)cf[XS9n[X#S9n[R"XVXS9n[XsS9nU$)aCompute mel frequencies. Args: n_mels (int, optional): Number of mel bins. Defaults to 64. f_min (float, optional): Minimum frequency in Hz. Defaults to 0.0. fmax (float, optional): Maximum frequency in Hz. Defaults to 11025.0. htk (bool, optional): Use htk scaling. Defaults to False. dtype (str, optional): The data type of the return frequencies. Defaults to 'float32'. Returns: Tensor: Tensor of n_mels frequencies in Hz with shape `(n_mels,)`. Examples: .. code-block:: python >>> import paddle >>> n_mels = 64 >>> f_min = 0.5 >>> f_max = 10000 >>> htk_flag = True >>> paddle_mel_freq = paddle.audio.functional.mel_frequencies( ... n_mels, f_min, f_max, htk_flag, 'float64') )rr)r(rlinspacer/) n_melsrf_maxrrmin_melmax_melr!r.s r'mel_frequenciesr7~s8B'G'G ??7V AD d $E Lr)c f[R"S[U5S- [SUS--5US9$)aCompute fourier frequencies. Args: sr (int): Sample rate. n_fft (int): Number of fft bins. dtype (str, optional): The data type of the return frequencies. Defaults to 'float32'. Returns: Tensor: FFT frequencies in Hz with shape `(n_fft//2 + 1,)`. Examples: .. code-block:: python >>> import paddle >>> sr = 16000 >>> n_fft = 128 >>> fft_freq = paddle.audio.functional.fft_frequencies(sr, n_fft) rrr1)rr2floatintsrn_fftrs r'fft_frequenciesr?s.( ??1eBi!mSUaZ-@ NNr)cUc[U5S- n[R"U[SUS--54US9n[ XUS9n [ US-X4XWS9n U SSU SS- n U R S5U R S5- n [U5H]n X*X- nXS-XS-- n[R"[R"U5[R"X55X'M_ US :Xa'S U SUS-U SU- - nUUR S5-nU$[U[[45(a([RRRXSS 9nU$) a(Compute fbank matrix. Args: sr (int): Sample rate. n_fft (int): Number of fft bins. n_mels (int, optional): Number of mel bins. Defaults to 64. f_min (float, optional): Minimum frequency in Hz. Defaults to 0.0. f_max (Optional[float], optional): Maximum frequency in Hz. Defaults to None. htk (bool, optional): Use htk scaling. Defaults to False. norm (Union[str, float], optional): Type of normalization. Defaults to 'slaney'. dtype (str, optional): The data type of the return matrix. Defaults to 'float32'. Returns: Tensor: Mel transform matrix with shape `(n_mels, n_fft//2 + 1)`. Examples: .. code-block:: python >>> import paddle >>> sr = 23 >>> n_fft = 51 >>> fbank = paddle.audio.functional.compute_fbank_matrix(sr, n_fft) Nr9rr1r<)rr4rrrslaney@)paxis)r:rzerosr;r?r7 unsqueezerangemaximum zeros_likeminimumrnn functional normalize)r=r>r3rr4rnormrweightsfftfreqsmel_ffdifframpsilowerupperenorms r'compute_fbank_matrixrYsrF }b A llFCEQJ$78FG"?H  %# E !"Icr "E OOA !3!3A!6 6E6] EH$!e uU|+^^   e $fnnU&B   xuQ!,uWf~=>5??1%% N D3, ' '))&&00r0J Nr)cUS::a [S5eUS::a [S5e[R"U5nS[R"[R"XB-U55-nUS[ R"[ X55--nUb;US:a [S5e[R"XTUR 5U- -5nU$)a0Convert a power spectrogram (amplitude squared) to decibel (dB) units. The function computes the scaling `10 * log10(x / ref)` in a numerically stable way. Args: spect (Tensor): STFT power spectrogram. ref_value (float, optional): The reference value. If smaller than 1.0, the db level of the signal will be pulled up accordingly. Otherwise, the db level is pushed down. Defaults to 1.0. amin (float, optional): Minimum threshold. Defaults to 1e-10. top_db (Optional[float], optional): Threshold the output at `top_db` below the peak. Defaults to None. Returns: Tensor: Power spectrogram in db scale. Examples: .. code-block:: python >>> import paddle >>> val = 3.0 >>> decibel_paddle = paddle.audio.functional.power_to_db( ... paddle.to_tensor(val)) rzamin must be strictly positivez#ref_value must be strictly positiver+ztop_db must be non-negative) Exceptionr ones_likerrIrmax)spect ref_valueamintop_dboneslog_specs r' power_to_dbrds4 qy899A~=>>   E "Dfll6>>$+u#EFFH tzz#i"6777H  A:9: :>>(HLLNV4K,LM Or)c[R"XS9n[R"XS9RS5n[R"[R [ U5- US--U-5nUcUS-nUR$US:XdeUS==S[R"S5- -ss'U[R"S[ U5- 5-nUR$)aCCreate a discrete cosine transform(DCT) matrix. Args: n_mfcc (int): Number of mel frequency cepstral coefficients. n_mels (int): Number of mel filterbanks. norm (Optional[str], optional): Normalization type. Defaults to 'ortho'. dtype (str, optional): The data type of the return matrix. Defaults to 'float32'. Returns: Tensor: The DCT matrix with shape `(n_mels, n_mfcc)`. Examples: .. code-block:: python >>> import paddle >>> n_mfcc = 23 >>> n_mels = 257 >>> dct = paddle.audio.functional.create_dct(n_mfcc, n_mels) r1rg?rCorthorr ) rarangerGcosrpir:sqrtT)n_mfccr3rOrnkdcts r' create_dctrp2s2  f*A f*44Q7A ** %-1s7+a/ C | s  55Lw A# #&& tyyuV},-- 55Lr))F)rr rboolreturnr )r-r rrqrrr )@rg@Ffloat32) r3r;rr:r4r:rrqrstrrrr)rt)r=r;r>r;rrurrr)rsrNFrBrt)r=r;r>r;r3r;rr:r4 float | NonerrqrOzLiteral['slaney'] | floatrrurrr)r rgT@) r^rr_r:r`r:rarvrrr)rfrt) rlr;r3r;rOzLiteral['ortho'] | Nonerrurrr) __future__rrtypingrrrrrpaddle.base.frameworkr paddle.pirr r:r r(r/r7r?rYrdrpr)r'r|s# 22 *-vu=N3l(X % % % %  %  %  %PO4&.F F F F  F  F  F $F F FV ) )) )  )  )^%, $ $ $ "$  $  $r)