Table of Contents
Advertisement
1.
VOCALFUSION
1.1. SCOPE OF DOCUMENT
The VocalFusion
®
XVF3510 User guide is written for system architects and engineers designing far-
field voice systems using the XVF3510 Voice processor. The document describes typical usage
models, the processor architecture, key feature operation, and interface definitions. In conjunction with
the product datasheet, these two documents provide all the information required for system design,
from concept to production testing and verification.
It is expected that this document is read in conjunction with the relevant datasheet and that the user
is familiar with basic voice processing terminology.
NOTE: This issue of the user guide covers the functionality supported by version 4.0 of the XVF3510
application firmware.
1.2. XVF3510 FAR-FIELD VOICE PROCESSORS
The XMOS XVF3510 range of processors use microphone array processing to capture clear, high-
quality voice from anywhere in the room. XVF3510 processors use highly optimised digital signal
processing algorithms implementing 'barge-in', point noise and ambient noise reduction to increase
the Signal-to-Noise Ratio (SNR) achieving a reliable voice interface whatever the environment.
The XVF3510 processor is designed for seamless integration into consumer electronic products
requiring voice interfaces for Automatic Speech Recognition (ASR), communications or conferencing.
In addition to its class-leading voice processing, the XVF3510 Voice processor provides a
comprehensive set of interfaces and configuration options to simplify the integration of a voice
interface into a wide range of system architectures. This includes specific features required in TV and
set-top box applications, including audio switching and digital inputs and outputs that support
switches and LED indicators.
The XVF3510 Voice processor is initially configured with data stored from a flash memory device or
sent from a host processor. The Device Firmware Upgrade function of the processor allows in field
upgrade ensuring all products can benefit from the latest releases. While the Voice processor is
running, this configuration can be modified by the host system over the XVF3510 control interface. The
control interface also allows the host system to control peripheral devices and obtain status information
from the device and its digital inputs.
Two variants of the XVF3510 are available which have been optimised for different application use
cases. These two variants require different firmware to be loaded onto the device.
Table 1-1 XVF3510 variants
PRODUCT
KEY FEATURES
Far-field voice interface
Audio interface: I2S (Slave)
XVF3510-INT
Control interface: I2C (Slave)
Device Firmware Upgrade: I2C (Slave)
Far-field voice interface
Audio interfaces: USB UAC1.0 (and optionally
I2S Master)
XVF3510-UA
Control interface: USB2.0 Full Speed
Device Firmware Upgrade: USB
XM-014232-PC
®
XVF3510 USER GUIDE
TARGET APPLICATION
Voice interface integrated into the product
USB plug-in voice accessory, and integrated
products using USB
5
Advertisement
Table of Contents
