High Dynamic Range Audio Applications For Digital Signal Processing
نویسنده
چکیده
Application of digital signal processing to audio is often limited by available converter technology and recorder datawidth to processes with controlled dynamic range. In digital mixing consoles some analogue gain control is normally required to achieve adequate performance for the input channel ADCs and digital multi-track recorders. This paper examines such dynamic range bottlenecks and derives specifications for typical applications. Equipment that has been designed to these specifications is described.
منابع مشابه
A 24-Bit, 8.1-MS/s D/A Converter for Audio Baseband Channel Applications
This paper study the high-level modelling and design of delta-sigma ( ) noise shapers for audio Digital-to-Analog Converter (DAC) so as to eliminate the in-band Signal-to-NoiseRatio (SNR) degradation that accompany one channel mismatch in audio signal. The converter combines a cascaded digital signal interpolation, a noise-shaping single loop delta-sigma modulator with a 5-bit quantizer resolut...
متن کاملImproving A/D Converter Performance Using Dither
Many analog-to-digital converter applications require low distortion for a very wide dynamic range of signals. Unfortunately, the distortion caused by digitizing an analog signal increases as the signal amplitude decreases, and is especially severe when the signal amplitude is of the same order as the quantizing step. In digital audio applications, for example, low-level signals occur often, so...
متن کاملDesign and Implementation of Digital Demodulator for Frequency Modulated CW Radar (RESEARCH NOTE)
Radar Signal Processing has been an interesting area of research for realization of programmable digital signal processor using VLSI design techniques. Digital Signal Processing (DSP) algorithms have been an integral design methodology for implementation of high speed application specific real-time systems especially for high resolution radar. CORDIC algorithm, in recent times, is turned out to...
متن کاملDesign of a High Range, High Efficiency Spread Spectrum Transmitter for Audio Communication Applications
This work proposes a direct sequence spread spectrum transmitter with high transmission range and efficiency for audio signals. It is shown that by choosing high process gain for spread spectrum signal the data could reach a range of 55km in the 2.4GHz ISM band. By employing a light modulation scheme, we have a relaxed SNR requirement for having a low bit error rate (BER) which translates to re...
متن کاملNational Instruments Flex II ADC Technology The Flexible Resolution Technology inside the NI PXI-5922 Digitizer
Single-bit delta-sigma analog-to-digital converters (ADCs) provide high resolution and high dynamic range for low-frequency applications. However, because of limited sampling speeds, single-bit delta-sigma ADCs are not available for applications involving dynamic signals greater than a few hundred kHz in frequency. Multibit delta-sigma ADCs can provide high dynamic range at high frequencies, pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1998