Content Actions

Download PDF
Save to del.icio.us (?)Add this content to the social bookmarking site del.icio.us, where you can share your favorite links with others.

Lenses

A lens is a custom view of Connexions content. You can think of it as a fancy kind of list that will let you see Connexions through the eyes of organizations and people you trust.

What is in a lens?

Lens makers point to Connexions materials (modules and collections), creating a guide that includes their own comments and descriptive tags about the content.

Who can create a lens?

Any individual Connexions member, a community, or a respected organization.

This content is ...

Affiliated with (?)

This content is either by members of the organizations listed or about topics related to the organizations listed. Click each link to see a list of all content affiliated with the organization.

This module is included inLens: Rice University OpenCourseWare
By: OpenCourseWare ConsortiumAs a part of collection:"Audio Localization"
Click the "Rice University OCW" link to see all content affiliated with them.
Rice University OCW

Related material

Collections using this content

Audio Localization

Tags: (?)
These tags come from the endorsement, affiliation, and other lenses that include this content.
Mathematics

Hardware Implementation for Audio Localization

Module by: Elizabeth Gregory, Joseph Cole

Summary: In this section, we will go over the hardware implementation, including the TI TMS320C6211 DSK Board features and the microphone array.

TI TMS320C6211 DSK Board

You can find a description of the board on the TI website.

To receive the signals, we decided to use the McBSP1 receive interrupt so we could read the values from our two 16 bit channels simultaneously.

Microphone Array

The Microphones and the Circuit

Figure 1

As shown in Figure 1, we used two electret microphones spaced 10 cm apart. Each microphone was amplified with identical non-inverting op-amp circuits (LM386), as shown in Figure 2. This circuit includes a low-voltage audio power amplifier and internal feedback with fixed gain.

The Microphone Amplifier Circuit

Figure 2

Comments, questions, feedback, criticisms?

Send feedback

More about this content: Metadata | Version History | Cite This Content

This work is licensed by Elizabeth Gregory and Joseph Cole. See the Creative Commons License about permission to reuse this material.

Last edited by Elizabeth Gregory on Dec 15, 2004 3:44 pm US/Central.

Connexions