Fixes for Klatt synthesizer

git-svn-id: https://espeak.svn.sourceforge.net/svnroot/espeak/trunk@234 d46cf337-b52f-0410-862d-fd96e6ae7743

src/compiledata.cpp

@@ -890,7 +890,7 @@ int Compile::LoadWavefile(FILE *f, const char *fname)
 		c2 = c3 << 24;
 		c2 = c2 >> 16;  // sign extend
 
-		sample = (c1 & 0xff) + c2;;
+		sample = (c1 & 0xff) + c2;
 
 		if(sample > max)
 			max = sample;
@@ -2210,7 +2210,7 @@ wxString CompileAllDictionaries()
 	if(f_phused != NULL)
 		fclose(f_phused);
 
-	LoadVoice(save_voice_name,1);
+	LoadVoiceVariant(save_voice_name,0);
 
 	if(errors == 0)
 		return(wxString::Format(_T(" Compiled %d dictionaries"),dict_count));

src/formantdlg.cpp

@@ -277,9 +277,9 @@ void FormantDlg::GetValues(SpectSeq *spectseq, int frame)
 		}
 	}
 
-	for(ix=1; ix < 6; ix++)
+	for(ix=1; ix < 7; ix++)
 	{
-		if(ix < 3)
+		if(ix < 4)
 		{
 			num = 0;
 			value = t_klt_bw[ix]->GetValue();

src/klatt.cpp

@@ -245,12 +245,13 @@ static int parwave(klatt_frame_ptr frame)
 
 	flutter(frame);  /* add f0 flutter */
 
-#ifdef deleted
+#ifdef LOG_FRAMES
+if(option_log_frames)
 {
 	FILE *f;
-	f=fopen("klatt_log","a");
-	fprintf(f,"%4dhz %2dAV %4d %3d, %4d %3d, %4d %3d, %4d %3d, %4d, %3d, %4d %3d TLT=%2d\n",frame->F0hz10,frame->AVdb,
-	frame->F1hz,frame->B1hz,frame->F2hz,frame->B2hz,frame->F3hz,frame->B3hz,frame->F4hz,frame->B4hz,frame->F5hz,frame->B5hz,frame->F6hz,frame->B6hz,frame->TLTdb);
+	f=fopen("log-klatt","a");
+	fprintf(f,"%4dhz %2dAV %4d %3d, %4d %3d, %4d %3d, %4d %3d, %4d, %3d, FNZ=%3d TLT=%2d\n",frame->F0hz10,frame->AVdb,
+	frame->Fhz[1],frame->Bhz[1],frame->Fhz[2],frame->Bhz[2],frame->Fhz[3],frame->Bhz[3],frame->Fhz[4],frame->Bhz[4],frame->Fhz[5],frame->Bhz[5],frame->Fhz[0],frame->TLTdb);
 	fclose(f);
 }
 #endif
@@ -468,7 +469,7 @@ static int parwave(klatt_frame_ptr frame)
 			temp =  32767.0;
 		}
 	
-		*out_ptr++ = int(temp);   // **JSD
+		*out_ptr++ = int(temp);
 		*out_ptr++ = int(temp) >> 8;
 		sample_count++;
 		if(out_ptr >= out_end)
@@ -492,15 +493,28 @@ to zero.
 static void reset_resonators()
 {
 	int r_ix;
+#ifdef LOG_FRAMES
+if(option_log_frames)
+{
+	FILE *f_log;
+	f_log=fopen("log-klatt","a");
+	if(f_log != NULL)
+	{
+		fprintf(f_log,"Reset\n");
+		fclose(f_log);
+	}
+}
+#endif
 
-	for(r_ix=0; r_ix < N_RSN; r_ix++)
+	for(r_ix=0; r_ix <= R6p; r_ix++)
 	{
 		kt_globals.rsn[r_ix].p1 = 0;
 		kt_globals.rsn[r_ix].p2 = 0;
 	}
 }
 
-static void parwave_init()
+
+void KlattReset()
 {
 	kt_globals.FLPhz = (950 * kt_globals.samrate) / 10000;
 	kt_globals.BLPhz = (630 * kt_globals.samrate) / 10000;
@@ -556,7 +570,7 @@ static void frame_init(klatt_frame_ptr frame)
 	kt_globals.amp_gain0 = DBtoLIN(Gain0_tmp) / kt_globals.scale_wav;
 	
 	/* Set coefficients of variable cascade resonators */
-	for(ix=0; ix<=8; ix++)
+	for(ix=1; ix<=9; ix++)
 	{
 		// formants 1 to 8, plus nasal pole
 		setabc(frame->Fhz[ix],frame->Bhz[ix],&(kt_globals.rsn[ix]));
@@ -1122,12 +1136,29 @@ void SetSynth_Klatt(int length, int modn, frame_t *fr1, frame_t *fr2, voice_t *v
 		}
 	}
 
+#ifdef LOG_FRAMES
+if(option_log_frames)
 {
-//FILE *f;
-//f=fopen("klatt_log","a");
-//fprintf(f,"len %4d  (%3d %4d %4d) (%3d %4d %4d)\n",length,fr1->ffreq[1],fr1->ffreq[2],fr1->ffreq[3],fr2->ffreq[1],fr2->ffreq[2],fr2->ffreq[3]);
-//fclose(f);
+	FILE *f_log;
+	f_log=fopen("log-espeakedit","a");
+	if(f_log != NULL)
+	{
+		fprintf(f_log,"K %3dmS  %3d %3d %4d %4d %4d %4d (%2d)  to  %3d %3d %4d %4d %4d %4d (%2d)\n",length*1000/samplerate,
+			fr1->klattp[KLATT_FNZ]*2,fr1->ffreq[1],fr1->ffreq[2],fr1->ffreq[3],fr1->ffreq[4],fr1->ffreq[5], fr1->klattp[KLATT_AV],
+			fr2->klattp[KLATT_FNZ]*2,fr2->ffreq[1],fr2->ffreq[2],fr2->ffreq[3],fr1->ffreq[4],fr1->ffreq[5], fr2->klattp[KLATT_AV] );
+		fclose(f_log);
+	}
+	f_log=fopen("log-klatt","a");
+	if(f_log != NULL)
+	{
+		fprintf(f_log,"K %3dmS  %3d %3d %4d %4d (%2d)  to  %3d %3d %4d %4d (%2d)\n",length*1000/samplerate,
+			fr1->klattp[KLATT_FNZ]*2,fr1->ffreq[1],fr1->ffreq[2],fr1->ffreq[3], fr1->klattp[KLATT_AV],
+			fr2->klattp[KLATT_FNZ]*2,fr2->ffreq[1],fr2->ffreq[2],fr2->ffreq[3], fr2->klattp[KLATT_AV] );
+	
+		fclose(f_log);
+	}
 }
+#endif
 
 	if(control & 1)
 	{
@@ -1135,24 +1166,25 @@ void SetSynth_Klatt(int length, int modn, frame_t *fr1, frame_t *fr2, voice_t *v
 		{
 			// A break, not following on from another synthesized sound.
 			// Reset the synthesizer
-			//reset_resonators(&kt_globals);
-			parwave_init();
+			KlattReset();
 		}
 		else
 		{
-			if((prev_fr.ffreq[1] != fr1->ffreq[1]) || (prev_fr.ffreq[2] != fr1->ffreq[2]))
+			for(ix=1; ix<6; ix++)
 			{
-
-				// fade out to avoid a click, but only up to the end of output buffer
-				ix = (out_end - out_ptr)/2;
-				if(ix > 64)
-					ix = 64; 
-				kt_globals.fadeout = ix;
-				kt_globals.nspfr = ix;
-				parwave(&kt_frame);
-
-				//reset_resonators(&kt_globals);
-				parwave_init();
+				if(prev_fr.ffreq[ix] != fr1->ffreq[ix])
+				{
+					// Discontinuity in formants.
+					// fade out to avoid a click, but only up to the end of output buffer
+					ix = (out_end - out_ptr)/2;
+					if(ix > 64)
+						ix = 64; 
+					kt_globals.fadeout = ix;
+					kt_globals.nspfr = ix;
+					parwave(&kt_frame);
+					reset_resonators();
+					break;
+				}
 			}
 		}
 		wdata.prev_was_synth = 1;
@@ -1203,8 +1235,14 @@ void SetSynth_Klatt(int length, int modn, frame_t *fr1, frame_t *fr2, voice_t *v
 
 	// nasal zero frequency
 	peaks[0].freq1 = fr1->klattp[KLATT_FNZ] * 2;
+	if(peaks[0].freq1 == 0)
+		peaks[0].freq1 = kt_frame.Fhz[F_NP];   // if no nasal zero, set it to same freq as nasal pole
+
 	peaks[0].freq = int(peaks[0].freq1);
 	next = fr2->klattp[KLATT_FNZ] * 2;
+	if(next == 0)
+		next = kt_frame.Fhz[F_NP];
+
 	peaks[0].freq_inc = ((next - peaks[0].freq1) * STEPSIZE) / length;
 
 	peaks[0].bw1 = 89;
@@ -1275,7 +1313,7 @@ void KlattInit()
 	kt_globals.outsl = 0;
 	kt_globals.f0_flutter = 20;
 
-	parwave_init();
+	KlattReset();
 
 	// set default values for frame parameters
 	for(ix=0; ix<=9; ix++)
@@ -1297,7 +1335,7 @@ void KlattInit()
 	kt_frame.Kskew = 0;
 	kt_frame.AB = 0;
 	kt_frame.AVpdb = 0;
-	kt_frame.Gain0 = 60;   // 62
+	kt_frame.Gain0 = 62;   // 60
 }  // end of KlattInit
 
 #endif  // INCLUDE_KLATT

src/klatt.h

@@ -68,7 +68,7 @@ typedef struct
 	int scale_wav;     // depends on the voicing source
 
 #define N_RSN 20
-#define Rnpc 0
+#define Rnz  0   // nasal zero, anti-resonator
 #define R1c  1
 #define R2c  2
 #define R3c  3
@@ -77,7 +77,7 @@ typedef struct
 #define R6c  6
 #define R7c  7
 #define R8c  8
-#define Rnz  9
+#define Rnpc 9   // nasal pole
 
 #define Rparallel 10
 #define Rnpp 10
@@ -111,25 +111,25 @@ typedef struct
 
 typedef struct
 {
-	long F0hz10; /* Voicing fund freq in Hz                          */
-	long AVdb;   /* Amp of voicing in dB,            0 to   70       */
+	int F0hz10; /* Voicing fund freq in Hz                          */
+	int AVdb;   /* Amp of voicing in dB,            0 to   70       */
 	int Fhz[10];  // formant Hz, F_NZ to F6 to F_NP
 	int Bhz[10];
 	int Ap[10];   /* Amp of parallel formants in dB,    0 to   80       */
 	int Bphz[10]; /* Parallel formants bw in Hz,       40 to 1000      */
 
-	long ASP;    /* Amp of aspiration in dB,         0 to   70       */
-	long Kopen;  /* # of samples in open period,     10 to   65      */
-	long Aturb;  /* Breathiness in voicing,          0 to   80       */
-	long TLTdb;  /* Voicing spectral tilt in dB,     0 to   24       */
-	long AF;     /* Amp of frication in dB,          0 to   80       */
-	long Kskew;  /* Skewness of alternate periods,   0 to   40 in sample#/2  */
+	int ASP;    /* Amp of aspiration in dB,         0 to   70       */
+	int Kopen;  /* # of samples in open period,     10 to   65      */
+	int Aturb;  /* Breathiness in voicing,          0 to   80       */
+	int TLTdb;  /* Voicing spectral tilt in dB,     0 to   24       */
+	int AF;     /* Amp of frication in dB,          0 to   80       */
+	int Kskew;  /* Skewness of alternate periods,   0 to   40 in sample#/2  */
 
-	long AB;     /* Amp of bypass fric. in dB,       0 to   80       */
-	long AVpdb;  /* Amp of voicing,  par in dB,      0 to   70       */
-	long Gain0;  /* Overall gain, 60 dB is unity,    0 to   60       */
+	int AB;     /* Amp of bypass fric. in dB,       0 to   80       */
+	int AVpdb;  /* Amp of voicing,  par in dB,      0 to   70       */
+	int Gain0;  /* Overall gain, 60 dB is unity,    0 to   60       */
 
-	long AVdb_tmp;      //copy of AVdb, which is changed within parwave()
+	int AVdb_tmp;      //copy of AVdb, which is changed within parwave()
 	int Fhz_next[10];    // Fhz for the next chunk, so we can do interpolation of resonator (a,b,c) parameters
 	int Bhz_next[10];
  } klatt_frame_t, *klatt_frame_ptr;

src/spect.cpp

@@ -288,7 +288,6 @@ int SpectFrame::Load(wxInputStream& stream, int file_format_type)
 	int  x;
 	unsigned short *spect_data;
 
-	file_format = file_format_type;
    wxDataInputStream s(stream);
 
 	time = s.ReadDouble();
@@ -299,10 +298,10 @@ int SpectFrame::Load(wxInputStream& stream, int file_format_type)
 	markers = s.Read16();
 	amp_adjust = s.Read16();
 
-	if(file_format == 2)
+	if(file_format_type == 2)
 	{
-		s.Read16();  // spare
-		s.Read16();  // spare
+		ix = s.Read16();  // spare
+		ix = s.Read16();  // spare
 	}
 
 	for(ix=0; ix<N_PEAKS; ix++)
@@ -315,7 +314,7 @@ int SpectFrame::Load(wxInputStream& stream, int file_format_type)
 		peaks[ix].pkwidth = s.Read16();
 		peaks[ix].pkright = s.Read16();
 
-		if(file_format == 2)
+		if(file_format_type == 2)
 		{
 			peaks[ix].klt_bw = s.Read16();
 			peaks[ix].klt_ap = s.Read16();
@@ -323,7 +322,7 @@ int SpectFrame::Load(wxInputStream& stream, int file_format_type)
 		}
 	}
 
-	if(file_format > 0)
+	if(file_format_type > 0)
 	{
 		for(ix=0; ix<N_KLATTP2; ix++)
 		{
@@ -351,8 +350,8 @@ int SpectFrame::Load(wxInputStream& stream, int file_format_type)
 }  //  End of SpectFrame::Load
 
 
-int SpectFrame::Save(wxOutputStream& stream)
-{//=========================================
+int SpectFrame::Save(wxOutputStream& stream, int file_format_type)
+{//===============================================================
 	int ix;
 
   	wxDataOutputStream s(stream);
@@ -365,7 +364,7 @@ int SpectFrame::Save(wxOutputStream& stream)
 	s.Write16(markers);
 	s.Write16(amp_adjust);
 
-	if(file_format == 2)
+	if(file_format_type == 2)
 	{
 		s.Write16(0);  // spare
 		s.Write16(0);  // spare
@@ -381,7 +380,7 @@ int SpectFrame::Save(wxOutputStream& stream)
 		s.Write16(peaks[ix].pkwidth);
 		s.Write16(peaks[ix].pkright);
 
-		if(file_format == 2)
+		if(file_format_type == 2)
 		{
 			s.Write16(peaks[ix].klt_bw);
 			s.Write16(peaks[ix].klt_ap);
@@ -389,7 +388,7 @@ int SpectFrame::Save(wxOutputStream& stream)
 		}
 	}
 
-	if(file_format > 0)
+	if(file_format_type > 0)
 	{
 		for(ix=0; ix<N_KLATTP2; ix++)
 		{

src/spect.h

@@ -135,7 +135,7 @@ public:
    int Import(wxInputStream &stream);
    int ImportSPC2(wxInputStream &stream, float &time_acc);
 	int Load(wxInputStream &stream, int file_format_type);
-	int Save(wxOutputStream &stream);
+	int Save(wxOutputStream &stream, int file_format_type);
    void Draw(wxDC &dc, int offy, int frame_width, double scalex, double scaley);
 
 	void ZeroPeaks();
@@ -161,7 +161,6 @@ public:
    int  nx;
    int  markers;
 	int  max_y;
-	int  file_format;  // 0=eSpeak, 1=Klatt, 2=eSpeak+Klatt
    USHORT *spect;    // sqrt of harmonic amplitudes,  1-nx at 'pitch'
 
 	short  klatt_param[N_KLATTP2];

src/spectseq.cpp

@@ -41,6 +41,7 @@ extern int Wavegen_Klatt(int resume);
 extern void SetSynth(int length, int modn, frame_t *fr1, frame_t *fr2, voice_t *v);
 extern int Wavegen();
 extern void CloseWaveFile2();
+extern void KlattReset();
 extern FILE *f_wave;
 
 static int frame_width;
@@ -114,11 +115,9 @@ void MakeWaveFile(int synthesis_method)
 		out_ptr = out_start = wav_outbuf;
 		out_end = &wav_outbuf[sizeof(wav_outbuf)];
 
-#ifdef KLATT_TEST
 		if(synthesis_method == 1)
 			result = Wavegen_Klatt(resume);
 		else
-#endif
 			result = Wavegen();
 
 		if(f_wave != NULL)
@@ -559,9 +558,12 @@ int SpectSeq::Save(wxOutputStream &stream, int selection)
 	
 	wxDataOutputStream s(stream);
 
+file_format = 2;   // inclue Klatt data in new saves
+
 	s.Write32(FILEID1_SPECTSEQ);
 	if(file_format == 2)
 		s.Write32(FILEID2_SPECTSQ2);
+	else
 	if(file_format == 1)
 		s.Write32(FILEID2_SPECTSEK);
 	else
@@ -576,7 +578,7 @@ int SpectSeq::Save(wxOutputStream &stream, int selection)
 	{
 		if((selection==0) || frames[ix]->selected)
 		{
-			if(frames[ix]->Save(stream) != 0) return(1);
+			if(frames[ix]->Save(stream, file_format) != 0) return(1);
 		}
 	}
 	return(0);
@@ -806,19 +808,12 @@ void SpectSeq::CopyDown(int frame, int direction)
 {//==============================================
 // Copy peaks down from next earlier/later keyframe
 	int  f1;
-	int  pk;
 
 	for(f1=frame+direction; f1>=0 && f1<numframes; f1 += direction)
 	{
 		if(frames[f1]->keyframe)
 		{
-			for(pk=0; pk<N_PEAKS; pk++)
-			{
-				frames[frame]->peaks[pk].pkfreq = frames[f1]->peaks[pk].pkfreq;
-				frames[frame]->peaks[pk].pkheight = frames[f1]->peaks[pk].pkheight;
-				frames[frame]->peaks[pk].pkwidth = frames[f1]->peaks[pk].pkwidth;
-				frames[frame]->peaks[pk].pkright = frames[f1]->peaks[pk].pkright;
-			}
+			memcpy(frames[frame]->peaks, frames[f1]->peaks, sizeof(frames[frame]->peaks));
 			memcpy(frames[frame]->klatt_param, frames[f1]->klatt_param, sizeof(frames[frame]->klatt_param));
 			break;
 		}
@@ -928,10 +923,19 @@ void PeaksToFrame(SpectFrame *sp1, peak_t *pks, frame_t *fr)
 	int  ix;
 	int  x;
 
+	fr->frflags = FRFLAG_KLATT;
+
 	for(ix=0; ix < 8; ix++)
 	{
 		if(ix < 7)
+		{
 			fr->ffreq[ix] = pks[ix].pkfreq;
+			fr->klatt_ap[ix] = pks[ix].klt_ap;
+			fr->klatt_bp[ix] = pks[ix].klt_bp/2;
+		}
+
+		if(ix < 4)
+			fr->bw[ix] = pks[ix].klt_bw/2;
 
 		fr->fheight[ix] = pks[ix].pkheight >> 6;
 		if(ix < 6)
@@ -953,6 +957,11 @@ void PeaksToFrame(SpectFrame *sp1, peak_t *pks, frame_t *fr)
 	{
 		fr->klattp[ix] = sp1->klatt_param[ix];
 	}
+	fr->klattp[KLATT_FNZ] = sp1->klatt_param[KLATT_FNZ]/2;
+	if(fr->fheight[1] == 0)
+	{
+		fr->klattp[KLATT_AV] -= 10;   // fade in/out
+	}
 }
 
 static void SetSynth_mS(int length_mS, SpectFrame *sp1, SpectFrame *sp2, peak_t *pks1, peak_t *pks2, int control)
@@ -962,9 +971,11 @@ static void SetSynth_mS(int length_mS, SpectFrame *sp1, SpectFrame *sp2, peak_t
 	PeaksToFrame(sp1,pks1,&fr1);
 	PeaksToFrame(sp2,pks2,&fr2);
 
-#ifdef KLATT_TEST
-//		SetSynth_Klatt((length_mS * samplerate) / 1000, 0, &fr1, &fr2, voice, control);    // convert mS to samples
-#endif
+	if(voice->klattv[0])
+	{
+		SetSynth_Klatt((length_mS * samplerate) / 1000, 0, &fr1, &fr2, voice, control);    // convert mS to samples
+	}
+	else
 	{
 		SetSynth((length_mS * samplerate) / 1000, 0, &fr1, &fr2, voice);    // convert mS to samples
 	}
@@ -992,9 +1003,12 @@ void SpectSeq::MakeWave(int start, int end, PitchEnvelope &pitch)
 	peak_t peaks2[N_PEAKS];
 	int synthesizer_type = 0;
 
-#ifdef KLATT_TEST
-KlattInit();
-#endif
+	if(voice->klattv[0])
+	{
+		synthesizer_type = 1;
+		KlattReset();
+	}
+
 	SpeakNextClause(NULL,NULL,2);  // stop speaking file
 
 	if(numframes==0) return;
@@ -1036,12 +1050,6 @@ KlattInit();
 		lfactor = 1;
 	}
 
-//	if((start==end) || (total_length == 0))
-//	{
-//		sp1->MakeWaveF(1, pitch, amplitude, duration);
-//		return;
-//	}
-
 	len_samples = int(((total_length * lfactor + 50) * samplerate) / 1000);
 	SetPitch(len_samples,pitch.env,9,44);
 
@@ -1066,14 +1074,8 @@ KlattInit();
 
 				if(first)
 				{
-					if(synthesizer_type == 1)
-					{
-						memcpy(peaks0,peaks1,sizeof(peaks0));
-					}
-					else
-					{
-						PeaksZero(peaks1,peaks0);  // fade in
-					}
+					PeaksZero(peaks1,peaks0);  // fade in
+
 					SetSynth_mS(20,sp1,sp1,peaks0,peaks1,0);
 					MakeWaveFile(synthesizer_type);
 					first=0;
@@ -1086,14 +1088,8 @@ KlattInit();
 		}
 	}
 
-	if(synthesizer_type == 1)
-	{
-		memcpy(peaks0,peaks2,sizeof(peaks0));
-	}
-	else
-	{
-		PeaksZero(peaks2,peaks0);  // fade out
-	}
+	PeaksZero(peaks2,peaks0);  // fade out
+
 	SetSynth_mS(30,sp2,sp2,peaks2,peaks0,2);
 	MakeWaveFile(synthesizer_type);
 
@@ -1126,9 +1122,12 @@ void SpectFrame::MakeWaveF(int control, PitchEnvelope &pitche, int amplitude, in
 	char *fname_speech;
 	int synthesizer_type = 0;
 
-#ifdef KLATT_TEST
-KlattInit();
-#endif
+	if(voice->klattv[0])
+	{
+		synthesizer_type = 1;
+		KlattReset();
+	}
+
 	SpeakNextClause(NULL,NULL,2);  // stop speaking file
 
 	length = duration;
@@ -1149,19 +1148,12 @@ KlattInit();
 	{
 		memcpy(peaks1,peaks,sizeof(peaks1));
 
-		if(synthesizer_type == 0)
-		{
-			for(ix=0; ix<N_PEAKS; ix++)
-			{
-				y = peaks1[ix].pkheight * amp_adjust * amplitude;
-				peaks1[ix].pkheight = y/10000;
-			}
-			PeaksZero(peaks1,peaks0);
-		}
-		else
+		for(ix=0; ix<N_PEAKS; ix++)
 		{
-			memcpy(peaks0,peaks1,sizeof(peaks0));
+			y = peaks1[ix].pkheight * amp_adjust * amplitude;
+			peaks1[ix].pkheight = y/10000;
 		}
+		PeaksZero(peaks1,peaks0);
 	
 		SetSynth_mS(20,this,this,peaks0,peaks1,0);
 		MakeWaveFile(synthesizer_type);

src/synthdata.cpp

@@ -35,7 +35,7 @@
 #include "translate.h"
 #include "wave.h"
 
-const char *version_string = "1.42.04  09.Dec.09";
+const char *version_string = "1.42.09  13.Dec.09";
 const int version_phdata  = 0x014200;
 
 int option_device_number = -1;

src/synthesize.cpp

@@ -553,7 +553,8 @@ static short vcolouring[N_VCOLOUR][5] = {
 
 if(voice->klattv[0])
 {
-	fr->klattp[KLATT_AV] = 53;   // reduce the amplituide of the start of a vowel
+//	fr->klattp[KLATT_AV] = 53;   // reduce the amplituide of the start of a vowel
+   fr->klattp[KLATT_AV] = seq[1].frame->klattp[KLATT_AV] - 6;
 }
 		if(f2 != 0)
 		{

src/wavegen.cpp

@@ -754,6 +754,7 @@ void WavegenInit(int rate, int wavemult_fact)
 
 #ifdef LOG_FRAMES
 remove("log-espeakedit");
+remove("log-klatt");
 #endif
 }  // end of WavegenInit