extra/f0detectionyin.m File Reference

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Functions
init variable compute	d (tau) x1
	d2 (1+lag)
	if (length(mloc)>0) I
	if (length(I)>0) candf0lag
candf0lag-1	d2 ()
id	f0lag ()
compute candidate frequency in Hz	if (ac > 0.2)%voiced/unvoiced threshold f0=0

Variables
function	f0
function	fs
function	ws
function	minf0
function	maxf0
maximum lag	th = 0.1
set threshold	d = zeros(maxlag,1)
init variable	d2 = zeros(maxlag,1)
	cumsumx = sum(x1.^2)
	cumsumxl = cumsumx
	xy = xcorr(x(1:ws*2),x1)
for	lag
end	cumsum = 0
end limit the search to the target range	minf0lag = 1+round(fs./minf0)
compute lag corresponding to minf0	maxf0lag = 1+round(fs./maxf0)
compute lag corresponding to maxf0 if(maxf0lag >1 &&maxf0lag< maxlag) d2(1 avoid lags shorter than maxf0lag end if(minf0lag >1 &&minf0lag< maxlag) d2(minf0lag avoid lags larger than minf0lag end find the best candidate	mloc = 1 + find((d2(2:end-1)<d2(3:end)).*(d2(2:end-1)<d2(1:end-2)))
minima	candf0lag = 0
	else [Y, I2] = min(d2(mloc))
	val = d2(candf0lag)
	rval = d2(candf0lag+1)
end end	ac = min(d2)
	f0lag = candf0lag-1

Function Documentation

init variable compute d

(

tau

)

d2

(

1+

lag

)

candf0lag-1 d2 ( )

virtual

id f0lag ( )

virtual

if	(	length(mloc)	,
		0
	)

if	(	length(I)	,
		0
	)

compute candidate frequency in Hz if ( ac  , 0.  2  )

pure virtual

Variable Documentation

end end ac = min(d2)

Definition at line 54 of file extra/f0detectionyin.m.

Referenced by aac_decode_init(), encode_thread(), flush(), frame_configure_elements(), get_block(), interpol(), and tscc2_decode_mb().

end candf0lag = 0

Definition at line 36 of file extra/f0detectionyin.m.

end cumsum = 0

Definition at line 18 of file extra/f0detectionyin.m.

cumsumx = sum(x1.^2)

Definition at line 10 of file extra/f0detectionyin.m.

cumsumxl = cumsumx

Definition at line 11 of file extra/f0detectionyin.m.

set threshold d = zeros(maxlag,1)

Definition at line 6 of file extra/f0detectionyin.m.

Referenced by __attribute__(), adx_decode(), adx_encode(), allocStuff(), av_basename(), av_des_mac(), av_dirname(), av_expr_parse_and_eval(), av_find_nearest_q_idx(), av_flt2int(), av_inv_q(), av_parse_ratio(), av_strtod(), av_timecode_adjust_ntsc_framenum2(), av_timegm(), avcodec_get_context_defaults3(), avi_sync(), avio_close_dyn_buf(), avs_probe(), blend_image(), body(), build_color_map(), build_filter(), calculate_visual_weight(), cmp_direct_inline(), cmp_inline(), color_distance(), config(), copy_field(), count_colors(), decode_13(), decode_deep_tvdc32(), decode_mb_i(), decode_rle(), decode_subframe_fixed(), deInterlaceMedian(), delta_decode(), diff_pixels_mvi(), diff_planes(), dirac_decode_frame_internal(), do_a_deblock_C(), doHorizDefFilter_C(), doVertDefFilter(), doVertDefFilter_altivec(), dv_encode_video_segment(), dv_extract_audio(), dv_inject_audio(), dyn_buf_seek(), dyn_buf_write(), encode_frame(), encode_init(), encode_residual_fixed(), encode_thread(), epzs_motion_search2(), epzs_motion_search4(), epzs_motion_search_internal(), eval_expr(), exchange(), ff_asf_get_packet(), ff_big_div(), ff_check_pixfmt_descriptors(), ff_decode_dxt1(), ff_decode_dxt3(), ff_h264_chroma_dc_dequant_idct(), ff_init_mpadsp_tabs(), ff_printGUID(), ff_shrink22(), ff_shrink44(), ff_spatial_idwt2(), ff_urldecode(), ff_vector_fmul_add_altivec(), ff_vector_fmul_reverse_altivec(), filter_frame(), flac_lpc_16_c(), float_to_int16_altivec(), float_to_int16_stride_altivec(), flv_probe(), full_search(), funny_diamond_search(), generate_wave_table(), get_dc(), get_mb_score(), get_shift(), getCoeff(), getnbctxno(), getSSD(), h263_h_loop_filter_c(), h263_v_loop_filter_c(), h264_loop_filter_chroma(), h264_loop_filter_chroma_intra(), h264_loop_filter_luma(), h264_loop_filter_luma_intra(), h_block_filter(), hex_search(), horizX1Filter(), hpel_motion_search(), iff_probe(), init_pass2(), init_stream(), initFilter(), initPv(), interpol(), interpolate(), is_mv_diff_gt_3(), l2s_dia_search(), lavfi_read_packet(), lex_double(), logdb(), lowpass(), lpc_prediction(), lz_unpack(), main(), mix_core(), modify_qscale(), monoblack2Y_c(), monowhite2Y_c(), motion_search(), mp4_read_iods(), mp4_read_od(), mpc_probe(), mpeg4_decode_sprite_trajectory(), palToA_c(), palToY_c(), parse_number_or_die(), parse_primary(), picmemset(), picmemset_8bpp(), png_get_interlaced_row(), png_put_interlaced_row(), pred16x16_vertical(), predictor(), put_vector(), qpel_motion_search(), quant(), render_slice(), resampleCubic(), rgb12to15(), rgb12tobgr12(), rgb15to16(), rgb15to16_c(), rgb15to24(), rgb15to32(), rgb15to32_c(), rgb15tobgr24(), rgb15tobgr24_c(), rgb15tobgr32(), rgb16to15(), rgb16to15_c(), rgb16to24(), rgb16to32(), rgb16to32_c(), rgb16tobgr24(), rgb16tobgr24_c(), rgb16tobgr32(), rgb24to15(), rgb24to15_c(), rgb24to16(), rgb24to16_c(), rgb24tobgr15(), rgb24tobgr15_c(), rgb24tobgr16(), rgb24tobgr16_c(), rgb32to15(), rgb32to15_c(), rgb32to16(), rgb32to16_c(), rgb32tobgr15(), rgb32tobgr15_c(), rgb32tobgr16(), rgb32tobgr16_c(), ring2_test(), rle_uncompress(), rtcp_update_jitter(), sab_diamond_search(), sad_hpel_motion_search(), select_palette(), set_param(), set_params(), set_string_number(), sha1_transform(), sha256_transform(), shuffle_bytes_2103(), shuffle_bytes_2103_c(), small_diamond_search(), srt_write_packet(), ssd_plane(), store_slice2_c(), store_slice_c(), swri_noise_shaping(), synth_filter_float(), tempNoiseReducer(), tempNoiseReducer_altivec(), tm2_apply_deltas(), tm2_read_deltas(), tm2_update_block(), tta_probe(), umh_search(), update_offsets(), url_open_dyn_buf_internal(), v_block_filter(), var_diamond_search(), vc1_filter_line(), vc1_h_overlap_c(), vc1_h_s_overlap_c(), vc1_v_overlap_c(), vc1_v_s_overlap_c(), vertX1Filter(), video_audio_display(), vorbis_packet(), vu9_to_vu12(), vu9_to_vu12_c(), wmv2_mspel8_v_lowpass(), write_float_3d_array(), write_float_4d_array(), writer_print_time(), xa_decode(), xget_zpixmap(), yvu9_to_yuy2(), yvu9_to_yuy2_c(), zmbv_decode_xor_16(), zmbv_decode_xor_32(), and zmbv_decode_xor_8().

compute d(tau d2 = zeros(maxlag,1)

Definition at line 7 of file extra/f0detectionyin.m.

Referenced by column_fidct_c(), compute_scale_factors(), decode_13(), eval_expr(), ff_h264_idct8_add_altivec(), ff_j_rev_dct(), ff_j_rev_dct4(), filter_3800(), float_to_int16_interleave_altivec(), h263_h_loop_filter_c(), h263_v_loop_filter_c(), initFilter(), main(), predictor_update_3930(), test_motion(), vc1_h_overlap_c(), vc1_h_s_overlap_c(), vc1_v_overlap_c(), and vc1_v_s_overlap_c().

else[Y, I2] = min(d2(mloc))

Definition at line 42 of file extra/f0detectionyin.m.

function f0

Initial value:

= f0detectionyin(x,fs,ws,minf0,maxf0) 
% x: input signal

Definition at line 1 of file extra/f0detectionyin.m.

f0lag = candf0lag-1

Definition at line 55 of file extra/f0detectionyin.m.

function fs

Definition at line 1 of file extra/f0detectionyin.m.

for lag

Initial value:

=0:maxlag-1 
    d(1+lag) = cumsumx + cumsumxl - 2*xy(1+lag)

Definition at line 14 of file extra/f0detectionyin.m.

Referenced by apply_ir_filter(), autocorr_max(), autocorrelate(), comp_ppf_gains(), create_adapt_vect(), ff_celp_circ_addf(), gen_acb_excitation(), gen_fcb_excitation(), get_residual(), gsm_decode_block(), long_term_synth(), lpc_compute_autocorr_c(), and residual_interp().

function maxf0

Definition at line 1 of file extra/f0detectionyin.m.

compute lag corresponding to minf0 maxf0lag = 1+round(fs./maxf0)

Definition at line 27 of file extra/f0detectionyin.m.

function minf0

Definition at line 1 of file extra/f0detectionyin.m.

end limit the search to the target range minf0lag = 1+round(fs./minf0)

Definition at line 26 of file extra/f0detectionyin.m.

compute lag corresponding to maxf0 if (maxf0lag>1 && maxf0lag<maxlag) d2(1 avoid lags shorter than maxf0lag end if (minf0lag>1 && minf0lag<maxlag) d2(minf0lag avoid lags larger than minf0lag end find the best candidate mloc = 1 + find((d2(2:end-1)<d2(3:end)).*(d2(2:end-1)<d2(1:end-2)))

Definition at line 35 of file extra/f0detectionyin.m.

rval = d2(candf0lag+1)

Definition at line 50 of file extra/f0detectionyin.m.

Referenced by decode_residues(), and ff_get_cpu_flags_x86().

maximum lag th = 0.1

Definition at line 5 of file extra/f0detectionyin.m.

const char const AVS_Value val = d2(candf0lag)

Definition at line 49 of file extra/f0detectionyin.m.

Referenced by add_entry1(), add_metadata_from_side_data(), add_opt(), adpcm_decode_frame(), alac_linear_predictor(), all_same(), arith2_get_number(), arith2_get_prob(), arith_get_bits(), arith_get_number(), arith_get_prob(), ascii_to_wc(), atomic_int_set_gcc(), atomic_int_set_suncc(), atomic_int_set_win32(), aura_decode_frame(), av_opt_get_key_value(), av_opt_set_defaults2(), av_read_image_line(), av_small_strptime(), av_write_image_line(), avio_rb16(), avio_rb24(), avio_rb32(), avio_rb64(), avio_rl16(), avio_rl24(), avio_rl32(), avio_rl64(), avisynth_open_file(), avpriv_atomic_int_set(), avpriv_atomic_ptr_cas(), aw_pulse_set1(), binkb_get_value(), compute_gammaval(), config_props(), create_default_qtables(), date_get_num(), dec_bark_env(), dec_gain(), decode_block(), decode_block_progressive(), decode_block_refinement(), decode_bmv_frame(), decode_clnpass(), decode_coeff(), decode_const_block_data(), decode_dc_progressive(), decode_dct(), decode_exp_lsp(), decode_fixed_sparse(), decode_frame(), decode_i_block(), decode_init_static(), decode_pivot(), decode_pixel(), decode_scale_factors(), decode_tile(), delta_decode(), dnxhd_mb_var_thread(), encode_ac_coeffs(), encode_block(), encode_frame(), estimate_sid_gain(), extend_code(), ff_amr_set_fixed_gain(), ff_ape_parse_tag(), ff_celp_lp_synthesis_filterf(), ff_h263_decode_motion(), ff_h264_decode_mb_cabac(), ff_h264_decode_mb_cavlc(), ff_id3v2_parse(), ff_lsp2polyf(), ff_mjpeg_encode_dc(), ff_mov_read_stsd_entries(), ff_mpeg1_encode_init(), ff_msmpeg4_encode_mb(), ff_mss12_model_update(), ff_poll_frame(), ff_rm_read_mdpr_codecdata(), ff_wmv2_decode_mb(), ff_wmv2_encode_mb(), ffio_read_varlen(), fill_rectangle(), filter_frame(), find_marker(), find_next_start_code(), frac_init(), get_aiff_header(), get_coeff(), get_coeff_bits(), get_dimension(), get_master_clock(), get_mvdata_interlaced(), get_utf8(), grab_read_header(), h261_decode_gob_header(), h261_encode_motion(), h263_decode_gob_header(), h263p_encode_umotion(), heap_sift(), hScale16To15_c(), hScale16To19_c(), hScale8To15_c(), hScale8To19_c(), hScale_altivec_real(), init_mv_penalty_and_fcode(), init_report(), inv_bits(), ivi_decode_blocks(), kmvc_decode_inter_8x8(), kmvc_decode_intra_8x8(), l1_unscale(), l2_unscale_group(), lag_decode_prob(), lag_get_rac(), latm_parse_packet(), loco_decode_plane(), loco_get_rice_param(), loco_update_rice_param(), lpc_prediction(), ls_encode_regular(), ls_encode_runterm(), mace_decode_frame(), main(), memset_float(), mmf_rate(), model256_update(), model_update(), mpeg1_encode_motion(), mpeg_decode_mb(), mpeg_decode_motion(), mpegts_write_pes(), mpegts_write_pmt(), mpegts_write_sdt(), msmpeg4v2_decode_motion(), msmpeg4v2_encode_motion(), msmpeg4v34_decode_mb(), mss4_decode_dct(), myrnd(), nelly_decode_block(), old_codec1(), open_output_file(), parse_ffconfig(), parse_int(), parse_key_value_pair(), parse_section_header(), parse_slave_options(), pp_get_mode_by_name_and_quality(), put16(), put_ebml_uint(), put_payload_header(), qpeg_decode_inter(), rac_get_bits(), rac_get_model256_sym(), rac_get_model_sym(), read_len_table(), read_table(), request_frame(), resample_one(), rl2_rle_decode(), sdt_cb(), set_param(), set_string_number(), smacker_decode_bigtree(), smka_decode_frame(), store_table(), swri_resample(), tag_tree_code(), tag_tree_decode(), tm2_get_token(), tscc2_decode_frame(), tscc2_decode_mb(), url_alloc_for_protocol(), utf8len(), v210_planar_unpack_c(), v410_decode_frame(), v410_encode_frame(), vble_restore_plane(), vble_unpack(), vc1_decode_b_mb(), vc1_decode_b_mb_intfi(), vc1_decode_b_mb_intfr(), vc1_decode_i_blocks(), vc1_decode_i_blocks_adv(), vc1_decode_p_mb(), vc1_decode_p_mb_intfi(), vc1_decode_p_mb_intfr(), vdpau_h264_decode_slice(), vdpau_mpeg_decode_slice(), vdpau_vc1_decode_slice(), vis_set_gsr(), vorbis_floor1_decode(), vp6_get_nb_null(), vp8_luma_dc_wht_dc_c(), wavesynth_synth_sample(), wma_decode_block(), wp_exp2(), write_pts(), X264_init(), xan_decode_chroma(), xan_huffman_decode(), xbm_decode_frame(), xwd_encode_frame(), yuv2NBPS(), yuv2plane1_10_c_template(), yuv2plane1_16_c_template(), yuv2plane1_8_c(), yuv2planeX_10_c_template(), yuv2planeX_16_altivec(), and yuv2planeX_16_c_template().

function ws

Definition at line 1 of file extra/f0detectionyin.m.

Referenced by wavesynth_close(), wavesynth_decode(), wavesynth_init(), and wavesynth_parse_extradata().

xy = xcorr(x(1:ws*2),x1)

Definition at line 12 of file extra/f0detectionyin.m.

Referenced by bidir_refine(), decide_ac_pred(), decode_hextile(), decode_slice(), encode_thread(), epzs_motion_search_internal(), ff_clean_intra_table_entries(), ff_er_frame_end(), ff_estimate_b_frame_motion(), ff_fix_long_mvs(), ff_fix_long_p_mvs(), ff_get_best_fcode(), ff_h263_decode_mb(), ff_h263_loop_filter(), ff_h263_update_motion_val(), ff_mpeg4_pred_ac(), ff_mpeg4_set_one_direct_mv(), ff_msmpeg4_coded_block_pred(), ff_pre_estimate_p_frame_motion(), ff_print_debug_info2(), h261_decode_mb(), h261_decode_mb_skipped(), h261_loop_filter(), interlaced_search(), mpeg4_decode_mb(), mpeg4_decode_partition_a(), mpeg4_decode_partition_b(), mpeg4_decode_partitioned_mb(), mpeg_decode_slice(), MPV_motion_internal(), predictor_calc_error(), preview_obmc(), set_p_mv_tables(), vc1_coded_block_pred(), vc1_pred_b_mv(), vc1_pred_mv(), vc1_pred_mv_intfr(), and wmv2_pred_motion().