SYMP DTMF
Decoder for
Blackfin processors.
DTMF decoder overview
for ADI Blackfin.
SYMP DTMF Decoder
Sympariyac (SYMP) delivers compliance-ready DTMF decoding for ADSP-BF5xx. Object code module with a C source wrapper and no framework dependencies.
Configurable Parameters
Power level, frequency deviation, signal duration, pause duration, and input buffer samples per block are user-configurable.
Input Format
16-bit PCM input format with 8 kHz sampling rate.
Re-entrant Design
Fully re-entrant and multi-instancing capable for multi-threaded systems.
Features and benefits
for DTMF decoding.
Designed for compliance testing, configurable signal parameters, and a small footprint on ADI Blackfin processors.
Compliance-grade DTMF detection
Engineered for telecom specs with reliable digit detection and clear diagnostics across tests.
Tune signal parameters
Power level, frequency deviation, signal duration, pause duration, and input block size are user-configurable.
Small memory and MIPS
Optimized for low footprint on Blackfin while keeping predictable performance.
Blackfin family ready
Code compatible across ADSP-BF5xx including BF533, BF527, BF518, and BF561.
Product details
and signal specs.
Configurable Parameters
Power level, frequency deviation, signal duration, pause duration, and input buffer samples per block are user-configurable.
Input Format
16-bit PCM input with 8 kHz sampling rate.
Release Format
Object code module with a C source wrapper; no framework dependencies.
Target Processor
Code compatible across the Blackfin processor family ADSP-BF5xx.
Compliance testing
across major standards.
Compliant with Bellcore GR-506-CORE, Bellcore TR-TSY-000181, ETSI 300-001, ETSI 201-235, ITU Q.24, Table A-1, AT&T, and NTT specifications.
Tested against
- Bellcore GR-506-CORE
- Bellcore TR-TSY-000181
- ETSI 300-001
- ETSI 201-235
- ITU Q.24, Table A-1
- AT&T
- NTT specifications
Coverage aligned to Bellcore, ETSI, ITU Q.24, Table A-1, AT&T, and NTT specifications.
Error codes
and diagnostics.
Reports up to 22 unique high level error codes with deterministic diagnostics for DTMF detection.
22 Error Codes
Actionable diagnostics for detection failures
Deterministic Reporting
Clear status for tone, duration, and pause validation
Re-entrant Design
Fully re-entrant and multi-instancing capable
Licensed modules for
ADI processor families.
Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.
Performance metrics
measured on Blackfin.
MIPS measured for a DTMF tone of 50ms of digit duration and 50ms of pause duration, Fs=8KHz. On ADSP-BF518, ADSP BF527, ADSP-BF533, ADSP-BF561.
For the optimal memory layout, all code except, adi_slow_noprio_code section is placed in L1. Code in adi_slow_noprio_code section is placed in L3. Data and stack were placed in L1 memory.
Paid plans for SYMP.
Single product evaluation
- DTMF decoder module
- Object code + C wrapper
- Blackfin ADSP-BF5xx support
- Email support
Compliance-focused teams
- Compliance testing matrix
- Configurable signal parameters
- 22 error codes
- Priority support
- Update access
Multi-team deployment
- Blackfin or SHARC families
- Object code module
- Compliance documentation
- License agreement support
Request your SYMP
DTMF decoder license.
Get licensing, compliance details, and delivery options for ADI Blackfin and SHARC processor families.