CEDAR SE1 Two-Channel Speech Enhancer
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The CEDAR SE1 is a compact two-channel speech enhancer designed for surveillance, security and rapid-response applications where improving speech intelligibility in difficult listening conditions is critical.
Positioned between the audio source and monitoring headphones, the SE1 combines advanced noise suppression with dynamic speech enhancement to make challenging live audio easier to hear and understand. Its noise suppression technology is derived from CEDAR’s FNR forensic noise reduction system, while a second dynamic enhancement process further reveals speech and incorporates limiting to prevent clipping caused by sudden loud sounds.
The SE1 supports flexible field workflows, including monitoring two microphones, allowing two listeners to monitor separate sources, or generating both untreated and enhanced versions of a single source. Analogue and digital connectivity makes integration with existing equipment straightforward, while two independent headphone outputs support direct live monitoring.
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With minimal latency, straightforward controls and 12 V operation for mains or battery-powered use, the SE1 is particularly suited to surveillance, investigation, transcription and other applications requiring clearer real-time speech in adverse audio conditions.
Product overview
Key product features
Processing
Two linkable channels of CEDAR processing
Floating-point processor
2.4 GFLOP/s processing performance
40-bit resolution
44.1 kHz sample rate
24-bit linear PCM audio
Analogue input
Input impedance: greater than 22 kΩ
Nominal signal level at 0 dB gain: -10 dBV
Clipping level at 0 dB gain: +4 dBV
Dynamic range at 0 dB gain: greater than 100 dB, AES17 A-weighted
THD+N at 0 dB gain: less than 0.01%
Maximum gain: +20 dB
Minimum gain: -6 dB
Maximum input level at -6 dB gain: +10 dBV
Digital input
Connector: RCA
Format: S/PDIF, IEC 60958
Sample-rate synchronization range: 40–50 kHz
Maximum gain: +6 dB
Minimum gain: -20 dB
Analogue output
Connector: RCA
Nominal signal level: -10 dBV
Maximum output: +4 dBV
Dynamic range: greater than 100 dB, AES17 A-weighted
THD+N: less than 0.01%
Output impedance: 150 Ω
Minimum load impedance: 2 kΩ
Short-circuit protection: indefinite
Digital output
Connector: unbalanced RCA
Format: S/PDIF, IEC 60958
Internal-sync sample rate: 44.1 kHz ±50 ppm
External sync: locked to S/PDIF input
Headphone outputs
Two independent headphone outputs
Connector: 6.35 mm stereo jack
Maximum output power: 90 mW into 32 Ω at 1.7 VRMS
Dynamic range: greater than 100 dB, AES17 A-weighted
THD+N: less than 0.05% into 32 Ω at 1 VRMS / 32 mW
Minimum load impedance: 16 Ω
Short-circuit protection: indefinite
Power
Input: 8 VDC to 17.5 VDC
Nominal supply: 12 VDC
Typical power consumption: 4 W
Mains operation: 85–250 VAC, 50–60 Hz via supplied 12 V adaptor
The manufacturer specifies UK, US, EU and Australian adaptor support.
Physical
Dimensions: 164 x 110 x 44 mm
Weight: less than 500 g
Data & specifications sheet
Audio processing Two-channel speech enhancement CEDAR FNR-derived forensic noise suppression Dynamic signal enhancement Integrated output limiting Minimal-latency operation.
Monitoring Two independent headphone outputs Supports two-microphone monitoring Supports independent monitoring by two listeners Can provide untreated and filtered versions of a single source.
Audio connectivity Analogue audio input and output Digital audio input and output.
Power 12 V power input Suitable for mains or battery-powered operation.
Physical Compact portable hardware processor.
Designed for field operation Supplied in a rugged case.
Applications Live surveillance monitoring.
Speech enhancement Real-time communications.
Investigation Transcription assistance.
Tactical and field audio monitoring.
FAQs
What does the CEDAR SE1 do?
The CEDAR SE1 enhances live speech to make difficult audio clearer and more intelligible. It combines advanced noise suppression based on CEDAR’s FNR forensic technology with dynamic speech enhancement, helping operators monitor speech captured in challenging environments.
How many audio channels does the CEDAR SE1 process?
The CEDAR SE1 provides two channels of speech enhancement. This allows it to support workflows such as monitoring two microphones or enabling two listeners to monitor separate audio sources.
Can the CEDAR SE1 provide both original and enhanced audio?
Yes. A single source can be processed so that both the untreated audio and filtered audio are available. This can be valuable in investigative or evidential workflows where listeners need access to both the original and enhanced signal.
Is the CEDAR SE1 suitable for surveillance applications?
Yes. CEDAR specifically designed the SE1 for applications including covert surveillance and rapid tactical response. Its compact format, minimal latency, simple controls and 12 V powering make it suited to operation in the field.
Does the CEDAR SE1 have headphone outputs?
Yes. The SE1 has two independent headphone outputs, allowing live audio to be monitored directly from the unit.
Can the CEDAR SE1 operate from a battery?
Yes. The SE1 has a 12 V power input designed to support mains or battery operation, making it practical for portable field applications.
Shipping & returns
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
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from 34 reviewsThank everyone, l used my cable at Bathurst last weekend and all systems we Go!
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Great service always a pleasure to deal with
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The storage bag is a brillant addition to keep everything together.
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Professional, prompt service! When it comes to motorsport and things need to be sorted in time before races & rallies, D2N came to our add without delay, checked all our radio issues which have haunted us for too long, ironed out all the bugs, now we're back-on-track!
Hi, they work really well, the club would like to purchase 2 more of them please. Can you do a deal for 2 more with the connecters to GME please.
Good price, quick delivery, seems like good quality for the price.
The staff was wonderful and I really enjoy the product. It’s easy to use and simple to do and the program is easy and simple.
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Works great, instantly sent to me.
The products supplied by D2N was the best in the business. We used these items for the first time around Mount Panorama, Bathurst which is known for poor coverage and interference. Their products were top notch, perfect range and quality of voice around the whole circuit, super impressed!
Great service and delivery, helpful, technical assistance.
Great company and great products.