Signal tracer For long pulse trains, a cyclic redundancy check may be calculated and displayed, giving the tech insight into the content of circuits that are switching rapidly. Signal tracer A signal tracer is a piece of electronic test equipment used to troubleshoot radio and other electronic circuitry. Usually a very simple device, it normally provides an amplifier, and a loudspeaker, often battery-powered and packaged into a small, hand-held test probe. An optional diode detector is usually also provided, allowing the detection of amplitude-modulated signals. The technician injects a test signal into the device under test. Then, by using the signal tracer,
Electronic fluency device like DAF, more effective when presented binaurally. In the last years a number of smart phone apps have been developed that implement DAF/FAF as software and are much cheaper than the special hardware devices, see External links. Studies have shown that altered auditory feedback (including delayed auditory feedback, frequency altered feedback) as provided by devices such as the Casa Futura School DAF machine or SpeechEasy can immediately reduce stuttering by 40 to 80 per cent in reading tasks. Laboratory studies suggest that reductions in stuttering with an electronic fluency device can occur without a reduced speech rate, and that speech