Find Jobs
Hire Freelancers

Digital audio transmission and reception

$30-5000 USD

En curso
Publicado hace más de 11 años

$30-5000 USD

Pagado a la entrega
We need to design electronic circuits that makes digital audio transmission and reception ; so it will consists of two circuits : transmission circuit and reception circuit and will have the following specifications : 1-the audio sampling rate should be as high as possible 2- Each audio sample will be preceded by the transmitter identification and followed by the [Sample End indication] as shown in the attachments 3- The carrier frequency should be between 300MHz and 450MHz to avoid any interference with the FM stations 4- The circuits component should be available and at low costs as much as possible but not affect the circuit efficiency 5- If there is a usage of microcontroller, you should use pic18f2550, as it is suitable for our market and our pic programmers. 6- The transmission range should not be less than 25 meter 7- The designs should be accompanied by a simulation which prove and confirm its performance where it is possible to do 8- The design should be attached with complete explanation of: a- The circuit operation, b- Each component function and specification c- The time and frequency chart of the circuits 9- In the transmission circuit, there should be a push button, when it pressed, the transmission process starts; otherwise, the transmission circuit is in standby (the lowest power consumption) 10- Both the transmission and reception circuits will be portable, so their power supply should be suitable for that, so we should use a commonly used type and voltage batteries 11- The designer should tell us in full details how to change the carrier frequency in both sides (transmission and reception circuits) , for example : for 300MHz , 350MHz and 400MHz , how the entire both circuits including their antennas should be
ID del proyecto: 2674041

Información sobre el proyecto

6 propuestas
Proyecto remoto
Activo hace 11 años

¿Buscas ganar dinero?

Beneficios de presentar ofertas en Freelancer

Fija tu plazo y presupuesto
Cobra por tu trabajo
Describe tu propuesta
Es gratis registrarse y presentar ofertas en los trabajos

Sobre este cliente

Bandera de EGYPT
Cairo, Egypt
0,0
0
Forma de pago verificada
Miembro desde nov 8, 2012

Verificación del cliente

¡Gracias! Te hemos enviado un enlace para reclamar tu crédito gratuito.
Algo salió mal al enviar tu correo electrónico. Por favor, intenta de nuevo.
Usuarios registrados Total de empleos publicados
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2024 Freelancer Technology Pty Limited (ACN 142 189 759)
Cargando visualización previa
Permiso concedido para Geolocalización.
Tu sesión de acceso ha expirado y has sido desconectado. Por favor, inica sesión nuevamente.