DTMF - Dual Tone Multi Frequency signaling tone

ADT DTMF C54x , C55x , C64x, C64x+, x86

DESCRIPTION

The Adaptive Digital Technologies Signaling Tone detector .pdf is a carrier class Signaling Tone detector that provides exceptional channel densities. The ADT Signaling Tone Detector detects Signaling tones such as DTMF, MF R1, R2 Forward, R2 Reverse, Call Progress signals. Adaptive Digital’s proprietary algorithm is robust enough to meet Bellcore GR-506, and ITU Q455 recommendations while using few CPU cycles.

Adaptive Digital's proprietary DTMF algorithm at less than one half the CPU utilization measured in MIPS (Millions of Instructions Per Second) offers more than twice the channel density compared with the nearest competitor while maintaining strict compliance with industry specifications Bellcore/Telcordia GR506 and ITU Q455.

An optional DTMF suppressor is available to suppress DTMF tones in Voice-Over-Packet systems that employ tone passing via out-of-band signaling. This is useful when a low rate speech compression algorithm is unable to pass the DTMF tones without significant distortion.

FEATURES

Detector

eXpress DSP compliant
ITU Q.24 compliant
Meets Bellcore GR506, ITU Q455 specifications
Robust detection
Low per-channel memory requirements
Low false alarm rate
C-callable
Designed for multi-channel operation
Programmable Frame Size

Suppressor

Rapid tone suppression
Minimal distortion to speech during false early detection
C-Callable
Designed for multi-channel operation

AVAILABILITY

ADT Tone Detect/Suppress is available on the TMS320™ DSP Family

C54x™DSP, C55x™DSP, & C64x™DSP Generations

SPECIFICATIONS

TONE DETECT & SUPPRESS C54x

All Memory usage is given in units of 16-bit word.

LOW Memory					LOW MIPS
Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
DTMF Detect	0.83	607	40	55	0.36	601	1704	72
MFR1 Detect	0.69	587	66	55	0.31	598	1626	72
MFR2 FDetect	0.92	551	60	55	0.58	492	828	72
MFR2 RDetect	0.92	551	60	55	0.58	492	828	72
CprgDetect	0.55	610	32	55	0.25	576	1496	72
Common	---	686	16	0	---	597	16	0
Suppress	0.22	398	1680	0	0.38	368	0	0

Last update: 06/21/2005

TONE DETECT & SUPRESS C55x

All Memory usage is given in units of byte.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
DTMF Detect	0.27	1311	3412	152
MFR1 Detect	0.22	1228	3256	152
MFR2 FDetect	0.46	1133	1660	152
MFR2 RDetect	0.46	1133	1660	152
CprgDetect	0.20	1133	2996	152
Common	---	1369	32	0
Suppress	0.17	598	0	0

Last update: 06/28/2009

TONE DETECT & SUPPRESS C64x

All Memory usage is given in units of byte.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
DTMF Detect	0.30	2176	3710	152
MFR1 Detect	0.22	1440	3272	152
MFR2 FDetect	0.33	1248	1736	152
MFR2 RDetect	0.33	1248	1736	152
CprgDetect	0.18	1408	2992	152
Common	---	2592	0	0
Suppress	0.38	1696	0	0

Last update: 06/30/2009

TONE DETECT & SUPPRESS C64x +

All Memory usage is given in units of byte.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
DTMF Detect	0.30	2592	3710	152
MFR1 Detect	0.22	1504	3272	152
MFR2 FDetect	0.33	1248	1736	152
MFR2 RDetect	0.33	1248	1736	152
CprgDetect	0.18	1312	2992	152
Common	---	2464	0	0
Suppress	0.38	1184	0	0

Last update: 10/19/2007

x86

All Memory usage is given in units of bytes.

Function	MIPs Per-Channel	Program Memory	Data Memory	Per-Channel Data Memory
DTMF Detect	0.30	2592	3710	152

Last update: 03/05/2008

FUNCTION

DTMF_ADT_Init(. . .)

MFR1_ADT_Init(. . .) MFR1_ADT_toneDetect(. . .)

MFR2_F _ADT_Init(. . .) MFR2_F_ADT_toneDetect(. . .)

MFR2_R _ADT_Init(. . .) MFR2_R_ADT_toneDetect(. . .)

CPRG _ADT_Init(. . .) CPRG_ADT_toneDetect(. . .)

DTMF_ADT_toneDetect(. . .) DTMF_ADT_toneSuppress(. . .)