search for: compute_impulse_response

...BF536 400/133 Mhz 3. Profiler says: vq_nbest 33.05% vq_nbest_sign 11.12% filter_mem16 4.14% inner_prod 4.07% iir_mem16 2.75% qmf_synth 2.32% lsp_to_lpc 2.32% open_loop_nbest_pitch 1.41% compute_impulse_response 1.37% qmf_decomp 1.28% lpc_to_lsp 1.26% fir_mem16 1.16% speex_bits_pack 1.07% speex_bits_unpack_unsigned 0.86% compute_rms16 0.79% 4. I'm using the echo-canceller + preprocessor, I'd really like to improve performan...

...9;m confident I can get 32 channels by optimizing 5 or 6 functions. I expect these numbers to translate over the DM642. Symbol Name Count cycle.Total: Incl. cycle.Total:Excl. compute_weighted_codebook 200 4511420 4511420 iir_mem2 599 3338308 3338308 filter_mem2 799 2323655 2323655 compute_impulse_response 200 1800518 1800518 pitch_gain_search_3tap 199 4726604 1744952 open_loop_nbest_pitch 199 4204121 1641016 vq_nbest 800 1626252 1626252 lpc_to_lsp 50 1612650 1558133 nb_encode 50 27412845 1179551 fir_mem2 50 1097300 1097300 inner_prod 27469 1072299 1072299 split_cb_sea...

Hello! I'v downloaded speex lib 1.1.11.1. I am trying to port speex lib to Blackfin processor. I am using VisualDSP++ 4.0. If I am compiling source codes with using floating point everything ok. When I am compiling with FIXED_POINT defined everything's ok and code works about two times faster. But when I am defining BFIN_ASM I am getting several compiling errors in Blackfin assembler

Hi, I can see that there has been some effort to compile the SPEEX codec to operate on the TI c54x and c55x DSPs and I am wondering if anyone would be able to update the mailing list with their current MIPs and Memory resource requirements for their c54x and/or c55x compilation? The only estimate I was able to find in the mailing list archive was 42MIPs but I'm not sure if this is an

...second thing is in the filters (*_mem2() functions). The reference implementation assumes that writes are as fast as reads. This is often not true on DSPs (at least on Blackfin), so it is possible to re-write the algorithm to take that into account. There is an example (in C) for filter_mem2() and compute_impulse_response() at the end of filters_bfin.h. Hope this helps. Jean-Marc Le mercredi 17 ao?t 2005 ? 16:41 -0400, Jim Crichton a ?crit : > The 42 MIP number was from my post of 24 May, and it was for C55x and > Speex 1.1.8. I tested 1.1.10 yesterday, and the number went down very > slightly; it was...

...quot;, "R5", "P0", "P1", "P2", "P3", "P4", "B1", "I1", "I3", "L1", "L3", "memory", + "ASTAT" BFIN_HWLOOP0_REGS BFIN_HWLOOP1_REGS ); } @@ -426,7 +430,8 @@ void compute_impulse_response(const spx_coef_t *ak, const spx_coef_t *awk1, cons "LOOP_END samples%=;\n\t" : "=a" (ytmp2), "=a" (y) : "a" (awk2), "a" (ak), "d" (ord), "m" (N), "0" (ytmp2), "1" (y) - : "A0", &q...

..._scal1 -R exc_gain_quant_scal1_bound -R exc_gain_quant_scal3 -R exc_gain_quant_scal3_bound -R gain_cdbk_lbr -R gain_cdbk_nb -R hexc_10_32_table -R hexc_table -R high_lsp_cdbk -R high_lsp_cdbk2 -R lag_window -R lpc_window -R shift_filt -R vbr_hb_thresh -R vbr_nb_thresh -R vbr_uhb_thresh -T bw_lpc -T compute_impulse_response -T compute_rms -T compute_rms16 -T filter_mem16 T _fini -T fir_mem16 -T forced_pitch_quant -T forced_pitch_unquant -T highpass -T iir_mem16 T _init -T inner_prod -T interp_pitch -T lpc_to_lsp -T lsp_enforce_margin -T lsp_interpolate -T lsp_quant_high -T lsp_quant_lbr -T lsp_quant_nb -T lsp_to_lpc...

..._scal1 -R exc_gain_quant_scal1_bound -R exc_gain_quant_scal3 -R exc_gain_quant_scal3_bound -R gain_cdbk_lbr -R gain_cdbk_nb -R hexc_10_32_table -R hexc_table -R high_lsp_cdbk -R high_lsp_cdbk2 -R lag_window -R lpc_window -R shift_filt -R vbr_hb_thresh -R vbr_nb_thresh -R vbr_uhb_thresh -T bw_lpc -T compute_impulse_response -T compute_rms -T compute_rms16 -T filter_mem16 T _fini -T fir_mem16 -T forced_pitch_quant -T forced_pitch_unquant -T highpass -T iir_mem16 T _init -T inner_prod -T interp_pitch -T lpc_to_lsp -T lsp_enforce_margin -T lsp_interpolate -T lsp_quant_high -T lsp_quant_lbr -T lsp_quant_nb -T lsp_to_lpc...

...gt;lpcSize); else { st->bw_lpc2[0]=1; for (i=1;i<=st->lpcSize;i++) st->bw_lpc2[i]=0; } for (i=0;i<st->subframeSize;i++) real_exc[i] = exc[i]; if (st->complexity==0) response_bound >>= 1; compute_impulse_response(st->interp_qlpc, st->bw_lpc1, st->bw_lpc2, syn_resp, response_bound, st->lpcSize, stack); for (i=response_bound;i<st->subframeSize;i++) syn_resp[i]=VERY_SMALL; /* Reset excitation */ for (i=0;i<st->subframeSize;i++) exc[i]=VERY_SMALL;...