usb sound

dB: What is a decibel? - Decibels: dB, dBA, dBC, dBV, dBm and dBi? What are they all? How are they related to loudness, to phons and to sones? This page describes and compares them all and gives sound file examples.

Voice keyer Interface by G4AXX - This voice-keyer-interface connects between a Yaesu FT1000MP and a PC's sound card & COM port. It can be used as a voice-keyer with Contest Voice Blaster and as a voice-keyer and CW-keyer with Writelog.

Digimode Sounds - Audio recordings of popular and not yet so popular digimodes

Digital Modes Samples - Audio recording of many ham radio digital modes emissions. Sound samples of HF VHF digital signals samples and published by KB9UKD

Morse Code Sound Samples - G4UCJ morse code table with mp3 morse audio samples

A Two-Way Morse Practice Set - The system consists of a pair of Morse practice oscillators connected by a piece of two-conductor cable. Pressing the key on one unit produces a sound in both units by Peter Parker VK3YE -

PSK31 Fundamentals and Setup - Background: The PSK31 philosophy, The QPSK mode, Varicode, Sound Card DSP Setup and Operating Tips

Making the Most of your PSK31 Signal - Adjusting audio output of your soundcard to obtain a perfect PSK signal from your transmission. A project to help you tuning your PSK31 emission.

Packet with Soundcard - Sound card packet by NM5RM. This amateur radio web site explains how to use the AGWPE utility program to send and receive packet using the sound card or sound chip of your PC instead of a traditional TNC or radio modem

Icom ACC1 interface - Need to interface both a TNC and the computer soundcard? This is a ICOM 756PRO ACC1 audio/keying/FSK interface by WA0SXV

FT1000MP to Sound Blaster - Yaesu FT 1000 MP to sound blaster card interface by Mark Marsden G4AXX

Getting Started with FT-817 in Digital Modes - Getting Started with Digital Sound Card Modes with the Yaesu FT-817 Transceiver by Clint Hurd KK7UQ

Interface for Yaesu VX-2 - DG6RBP USB-Programming Interface for Yaesu VX-2

Sound Company Virginia - Sound System Alexandria, Baltimore, Maryland, Washington DC Priority listing - Sound company virginia provides audio equipments, audio tape recorder with the capability to directly record live spoken words with highest audio quality.

Aldo - Morse tutor - A morse tutor that drives any Linux supported soundcard.

Multi-Instrument - Contains a PC sound card based signal generator. It can generate functions, multitones, arbitrary waveforms, burst tones, MLS, DTMF, musical scales, white noise and pink noise, and frequency/amplitude sweep. Fully functional free trial downloadable.

Spectrogram for iPhone - Spectrogram for iPhone displays a live, scrolling display of sound frequency components derived from a 1024 FFT analysis.

Audio Kit for iPhone - Audio Kit is a collection of four iphone applications which are essential for those working in audio and sound. A real time Spectrum Analyser, a Scope to display waveforms, an SPL Meter, and a sine wave Signal Generator.

Yaesu DSP Settings for Heil Microphones - To achieve maximum audio quality it is important to adjust the DSP settings of your transmitter when using Heil microphones.

ICOM SoundBlaster Interface - Interfacing ICOM radios with PC soundcard by W8WWV

Big Dummy's Data Interface - Simple soundcard data interface for the various data modes

USB Warbler - This project describes how one USB port can provide all of the signals necessary to operate a transceiver in digital mode from a Windows XP laptop by KG4JJH

Sound Card to Radio Interfacing - Sound card Hamming, PSK31 and other digital modes, CQ amateur radio article by K5ABT

Multimeter with Sound Blaster - Sound card based multimeter

N5EG VNA - This article describes a low-cost vector network analyzer that operates from 200 kHz to 100 MHz, and connects to a personal computer using a USB 1.1 interface By Tom McDermott, N5EG, and Karl Ireland