stpt.m File Reference

Go to the source code of this file.

Functions
Synth Windw Norm	while (pin< pend)%Until the end...%---Analysis x_w
fftbuffer, [0,-(M-1	circshift ()
fftbuffer, N	fft ()
1:N/2-1	Xmag ()
Save mag values	plot_peaks (Xmag, Xphase, ploc, t)
	Transposition (fx)%ploc
Harmonics	mapping (fx) Xmag(ploc)
Add the mag maxs	Xphase (ploc)
1i.*Xphase	exp ()
Generate posit freq	Y (N/2+2:N)
1:M	w_out ()
id	H ()

Variables
function	y
Window size	pin =0
Start pointer	pend =length(x)-M
Inicial output	npeaks =0
Number of peaks	w =w./sum(w)
Analy Windw Norm	w_out =hanning(M)'
Windowing signal	fftbuffer =[x_w, zeros(1,N-M)]
FFT	Xmag =20*log10(abs(X(1:N/2+1)))
Magnitude in dBs	Xphase =unwrap(angle(X(1:N/2+1)))
	pphase =Xphase(ploc)
Save phase values	pmag =Xmag(ploc)
Modifying Xphase	ploc =round(ploc.*0.96)
Generate negat freq	fftbuffer_out =real(ifft(Y))

Function Documentation

fftbuffer,[0,-(M-1 circshift ( )

virtual

1i.*Xphase exp ( )

virtual

Referenced by ac3_exponent_min_c(), acelp_decode_gain_codef(), adpcm_decode_frame(), apply_channel_coupling(), ath(), compute_exp_strategy(), config_output(), control(), decode(), decode_subframe(), encode_codeword(), encode_exp_vlc(), encode_exponents(), eval_expr(), evrc_decode_frame(), exr_flt2uint(), exr_halflt2uint(), ff_acelp_decode_gain_code(), get_aiff_header(), init_pass2(), modify_qscale(), mulawinv(), parse_primary(), put_float(), qdm2_fft_decode_tones(), qdm2_fft_init_coefficient(), stream_component_open(), swri_dither_init(), sws_getGaussianVec(), vorbis_floor0_decode(), vorbisfloat2float(), and wv_get_value_float().

fftbuffer,N fft ( )

virtual

id H ( )

virtual

Harmonics mapping

(

fx

)

Referenced by channelmap_init(), libopus_decode_init(), vorbis_encode_frame(), and vorbis_parse_audio_packet().

Save mag values plot_peaks	(	Xmag	,
		Xphase	,
		ploc	,
		t
	)

Transposition

(

fx

)

1:M w_out ( )

virtual

Synth Windw Norm while

(

)

Referenced by adx_decode_frame(), aw_pulse_set1(), ff_asf_get_packet(), get_pool(), mp_read_changes_map(), print_frame(), smc_decode_stream(), and zero12v_decode_frame().

1:N/2-1 Xmag ( )

virtual

Add the mag maxs Xphase

(

ploc

)

Generate posit freq Y

(

N/2+2:N

)

Variable Documentation

Windowing signal fftbuffer =[x_w, zeros(1,N-M)]

Definition at line 13 of file stpt.m.

Clean the signal fftbuffer_out =real(ifft(Y))

Definition at line 33 of file stpt.m.

Find the local max npeaks =0

Definition at line 6 of file stpt.m.

Start pointer pend =length(x)-M

Definition at line 4 of file stpt.m.

Window size pin =0

Definition at line 3 of file stpt.m.

Modifying Xphase ploc =round(ploc.*0.96)

Definition at line 26 of file stpt.m.

Save phase values pmag =Xmag(ploc)

Definition at line 22 of file stpt.m.

pphase =Xphase(ploc)

Definition at line 21 of file stpt.m.

Number of peaks w =w./sum(w)

Definition at line 7 of file stpt.m.

Synthesis window w_out =hanning(M)'

Definition at line 8 of file stpt.m.

Plotting peaks Xmag =20*log10(abs(X(1:N/2+1)))

Definition at line 16 of file stpt.m.

Modifying Xmag Xphase =unwrap(angle(X(1:N/2+1)))

Definition at line 17 of file stpt.m.

End pointer y

Initial value:

= stpt(x,w,N,H,t)
M=length(w)

Definition at line 1 of file stpt.m.