scholarly journals Design and implementation of a personal audio system in a car cabin

2013 ◽  
Vol 133 (5) ◽  
pp. 3251-3251
Author(s):  
Jordan Cheer ◽  
Stephen J. Elliott
Keyword(s):  
Design And Implementation ◽  
Audio System

The DSP Design and Implementation of a Directional Audio System through N-Order Approximate Square Root Method

2013 ◽  
Vol 416-417 ◽  
pp. 1147-1151
Author(s):  
Yong Chun Xu ◽  
Zhe Liu ◽  
Jin Yu Guan
Keyword(s):  
Basic Principle ◽  
Floating Point ◽  
Far Field ◽  
Square Root ◽  
Practical Test ◽  
Design And Implementation ◽  
Field Solution ◽  
And Performance ◽  
Square Root Method ◽  
Audio System

The signal preprocessing methods in a directional audio system are almost based on Berkatay far-field solution. In this paper, the basic principle and performance of square root method are analyzed, and also a directional audio system based on floating-point DSP is designed with the 4-order approximate square root method. Through theory simulation and practical test, the effect is proven to be satisfactory.

Design and Implementation of an Adaptive and Effective Audio System for Classroom

2019 ◽  
Author(s):  
Saif Hannan ◽  
Muhammad Nurul Islam ◽  
Atikur Rahaman ◽  
Sahariar Emon ◽  
Mozahidul Islam
Keyword(s):  
Design And Implementation ◽  
Audio System

scholarly journals Holophonic Sound in IRCAM's Concert Hall: Technological and Aesthetic Practices

2016 ◽  
Vol 40 (4) ◽  
pp. 14-34 ◽  
Author(s):  
Thibaut Carpentier ◽  
Natasha Barrett ◽  
Rama Gottfried ◽  
Markus Noisternig
Keyword(s):  
Wave Field ◽  
Computer Music ◽  
Sound Field ◽  
Higher Order ◽  
Software Architectures ◽  
Concert Hall ◽  
Design And Implementation ◽  
Spatial Composition ◽  
Wave Field Synthesis ◽  
Audio System

This article presents a report on technological and aesthetic practices in the variable-acoustics performance hall, Espace de Projection, at the Institut de Recherche et Coordination Acoustique/Musique. The hall is surrounded by a 350-loudspeaker array for sound-field reproduction using holophonic approaches such as wave-field synthesis and higher-order Ambisonics. First we present the design and implementation of the audio system and discuss the challenges of both hardware and software architectures. This is followed by a discussion of spatial composition techniques, aesthetic approaches, and methodologies for composing computer music for high-density loudspeaker arrays, explored through the paradigmatic examples of pieces produced by two artist-in-research residencies.

scholarly journals Design and Implementation of Embedded Audio System based on Zynq-SOC

2019 ◽  
Vol 8 (9) ◽  
pp. 860-864
Keyword(s):  
Intelligent Systems ◽  
High Speed ◽  
Low Cost ◽  
Block Design ◽  
Optimized Design ◽  
Design Metrics ◽  
Design And Implementation ◽  
Electret Microphone ◽  
Wide Range ◽  
Audio System

Nowadays smart world requires, Embedded audio system with optimum design metrics for smart applications in various fields like smart car, intelligent systems and Robotics etc. This paper describes the Design and implementation of embedded Audio system for real-time applications on SOC-FPGA with optimized design metrics (low power, low-cost, low development time, low area, high speed). An electret microphone / line in are used to feed the audio input. An audio codec from Analog devices named ADAU1761 which is integrated on the zynq-7020 board. In the proposed embedded audio system, the block design in Vivado2017.2 has been modeled with VHDL; application software developed using C language in SDK2017.2. This Audio system is the optimized solution for a wide range of smart applications.

scholarly journals Touch-and-Go: Interior Tactile Communication in Armored Fighting Vehicles

2019 ◽  
Vol 28 (2) ◽  
pp. 16-21
Author(s):  
Nuphar Katzman ◽  
Tal Oron-Gilad
Keyword(s):  
Auditory System ◽  
Internal Communication ◽  
Specific Design ◽  
Direct Communication ◽  
Design And Implementation ◽  
Tactile Communication ◽  
Tactile Cues ◽  
Communication Traffic ◽  
Tactile System ◽  
Audio System

In armored fighting vehicles (AFVs), the vehicle commander (VC) and crew communicate through an audio system that all crew members inside the AFV can hear. This can be distracting and inconvenient, especially for effective communication between the VC and the driver. We assessed the feasibility and usability of a tactile system for direct communication between the VC and the driver in addition to (or instead of) the existing auditory system. Field experiment results show that, with or without auditory commands, tactile cues can be utilized to direct AFV drivers during operational tasks. Hence, specific design and implementation of a tactile interface should be considered for internal communication traffic.

scholarly journals ARE: An Audio Reality Engine for Virtual Environments

2000 ◽  
Vol 4 (3) ◽  
pp. 69-81 ◽  
Author(s):  
Qiong Zhang ◽  
Jiaoying Shi ◽  
Zhigeng Pan
Keyword(s):  
Neural Network ◽  
Virtual Environments ◽  
General Purpose ◽  
Sound Sources ◽  
Design And Implementation ◽  
Acoustic Simulation ◽  
Dynamic Mechanisms ◽  
Implementation Techniques ◽  
Simulation Based ◽  
Audio System

A general-purpose virtual audio system called the Audio Reality Engine (ARE) is proposed in this paper. Based on the investigation of the addition of spatial-localized sound to virtual environments, we discuss in detail the design and implementation techniques, including HRTF model based on neural network, the simulation of moving sound sources, the simulation of Doppler effects, and room acoustic simulation based on dynamic mechanisms. Experimental results illustrate the efficiency of our system.

Personal Audio System: Hearing Symptoms, Habits, and Sound Pressure Levels Measured in Real Ear and a Manikin

2020 ◽  
Vol 63 (6) ◽  
pp. 2016-2026
Author(s):  
Tamara R. Almeida ◽  
Clayton H. Rocha ◽  
Camila M. Rabelo ◽  
Raquel F. Gomes ◽  
Ivone F. Neves-Lobo ◽  
...  
Keyword(s):  
Sound Pressure ◽  
Daily Basis ◽  
Cross Sectional Study ◽  
Normal Hearing ◽  
Chi Square ◽  
Cross Sectional ◽  
The Real ◽  
Significant Difference ◽  
Sound Pressure Levels ◽  
Audio System

Purpose The aims of this study were to characterize hearing symptoms, habits, and sound pressure levels (SPLs) of personal audio system (PAS) used by young adults; estimate the risk of developing hearing loss and assess whether instructions given to users led to behavioral changes; and propose recommendations for PAS users. Method A cross-sectional study was performed in 50 subjects with normal hearing. Procedures included questionnaire and measurement of PAS SPLs (real ear and manikin) through the users' own headphones and devices while they listened to four songs. After 1 year, 30 subjects answered questions about their usage habits. For the statistical analysis, one-way analysis of variance, Tukey's post hoc test, Lin and Spearman coefficients, the chi-square test, and logistic regression were used. Results Most subjects listened to music every day, usually in noisy environments. Sixty percent of the subjects reported hearing symptoms after using a PAS. Substantial variability in the equivalent music listening level (Leq) was noted ( M = 84.7 dBA; min = 65.1 dBA, max = 97.5 dBA). A significant difference was found only in the 4-kHz band when comparing the real-ear and manikin techniques. Based on the Leq, 38% of the individuals exceeded the maximum daily time allowance. Comparison of the subjects according to the maximum allowed daily exposure time revealed a higher number of hearing complaints from people with greater exposure. After 1 year, 43% of the subjects reduced their usage time, and 70% reduced the volume. A volume not exceeding 80% was recommended, and at this volume, the maximum usage time should be 160 min. Conclusions The habit of listening to music at high intensities on a daily basis seems to cause hearing symptoms, even in individuals with normal hearing. The real-ear and manikin techniques produced similar results. Providing instructions on this topic combined with measuring PAS SPLs may be an appropriate strategy for raising the awareness of people who are at risk. Supplemental Material https://doi.org/10.23641/asha.12431435

AAC Considerations for Individuals With Angelman Syndrome

2015 ◽  
Vol 24 (3) ◽  
pp. 106-113 ◽  
Author(s):  
Stephen N. Calculator
Keyword(s):  
Angelman Syndrome ◽  
Augmentative And Alternative Communication ◽  
High Tech ◽  
Alternative Communication ◽  
Design And Implementation

Purpose To provide an overview of communication characteristics exhibited by individuals with Angelman Syndrome (AS) and special considerations associated with the design and implementation of augmentative and alternative communication (AAC) programs. Method Results of recent studies exploring individuals' uses of AAC are reviewed, with particular emphasis on factors related to individuals' acceptance and successful uses of AAC systems. Results Not applicable Conclusion Despite their inconsistent access to practices previously found to foster individuals' acceptance of AAC systems, individuals with AS demonstrate the ability to use AAC systems, including high-tech AAC devices, successfully.

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