Simple speech processor for homebrew and QRP SSB transceivers that boosts average talk power while preserving natural audio. BF245 mic preamp, dynamic compression stage, and TL071 output amplifier improve readability and on-air presence.
Tag: speech compressors
Explore speech compressors and audio processor circuits on DXR Electronics Bits, including LM324/LM1458/TL071 microphone compressors, SSB speech processors, and logarithmic dynamic-range control designs. Learn compression theory, gain-control methods, and practical integration into HF transceiver audio chains for stronger, clearer on-air signals.
TL071 Audio Compressor Circuit
The TL071 operational amplifier makes an excellent foundation for DIY audio compressor circuits. This single-supply design TL071 Audio Compressor offers reliable dynamic range control for musical instruments and recording applications. TL071 Audio Compressor – Circuit Overview This TL071 Audio Compressor circuit uses the TL071 op-amp as the main gain control element. The design operates on […]
Microphone compressor using LM1458
The LM1458 is a dual operational amplifier (op-amp) that finds applications in audio amplification and other circuits. Let’s explore how you can create a simple Microphone compressor using the LM1458. To get greater transmitting performance from your ham radio transceiver, we need to keep the modulation level constant, regardless of your voice level. With the compressor […]
Dynamic speech compressor with audio preamplifier
Dynamic speech compressor is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds, therefore reducing or compressing an audio signal’s dynamic range. Compression is commonly used in sound recording and reproduction, broadcasting, hearing aid, live sound reinforcement, and in some instrument amplifiers. There are two types of compression, […]
Simple audio compressor for SSB HF Radio rigs
Simple audio compressor for SSB HF Radio rigs An audio/speech compressor is a device that reduces the dynamic range of the audio signal. This means that it makes the loud parts of the signal quieter and the quiet parts of the signal louder. This can be useful for SSB HF radio rigs because it can […]
LM324 microphone speech compressor
Stop fading into the noise! Build this simple, low-cost speech compressor using the LM324 quad op-amp to ensure your voice stays loud and clear on the airwaves.
Amateur Radio – Mike Preamplifier/Speech compressors/Audio Processors – Resources
Audio processors and Speech compressors are important in SSB radio because they can help improve the transmitted signal’s quality. Here are complete resources and links available in the internet connected to Mike Preamplifier/Speech compressors/Speech Processors Dyna Audio compressor Noise Canceling Electret Microphones – WB9YBM Microphone Speech Processor Microphone Amplifier with ALC Audio compression with transistors […]
Really Cheap audio compressor
The Really cheap audio compressor circuit diagram from www.freestompboxes.org is a simple, yet effective compressor circuit that can be built with a handful of cheap components. The circuit consists of two op-amps, two LEDs, a LDR, a few resistors, and a capacitor. The first op-amp (U1) is configured as a unity gain amplifier. The input […]
SSM2167 audio processor for Baofeng Mic enclosure
SSM2167 audio processor for Baofeng Mic enclosure Mic gain is barely adequate on the µBITx transceiver since there is no Mic Gain control. It would also be helpful to not only provide mic gain control, but to add compression in order to boost the average power output.The SSM2167 is a powerful audio processor that can […]
Simple mic compressor using 3 Transistors for HF rigs
Simple mic compressor using 3 Transistors is a effective, compressor circuit that can be used to improve the dynamic range of a microphone signal. The circuit is made up of three transistors, and it is powered by a 12-volt supply. It was designed by Eko Pramono, a ham radio operator from Indonesia. The circuit is […]