News

crispAudio broadens portfolio of Audio amplifier output stages

Schlitz/Shenzhen, 02 Jul 2019

crispAudio GmbH, a subsidiary of Dainty Gemmy Group, today announced it’s new range of Class-D audio amplifier output stages ranging from 10W to 600W per output channel.

All output stages enable full diagnosis and protection features and are targeted at Automotive OEM and aftermarket amplifiers. Depending on the required output power rating and speaker impedance the supply voltage can be controlled dynamically to enable high power efficiency under light load situations.

The audio performance is unrivalled with SNR ratios of >110dBA and advanced features such as frequency scaling and spread-spectrum to fulfill CISPR25 EMC requirements.

The output stages support analogue and digital inputs and can be combined independently to also support high channel count products.

For more information, please contact crispAudio.

crispAudio unveils Turnkey solution for Automotive DSP audio amplifier

Schlitz/Shenzhen, 18 Dec 2018

crispAudio GmbH, a subsidiary of Dainty Gemmy Group, today announced the release of it‘s turnkey product family which enables development automotive high performance DSP audio amplifier at record speed.

The product platform is based on the powerful DRA78X system-on-chip from Texas Instrument which was tailored for these kind of applications and is available in different configurations and speed grade to suit cost-efficient and ultra-high performance systems.

CrispAudio offers a ready-to-use OEM reference product which offers 12 power amplifier outputs, 4 analogue audio inputs, 4 microphone inputs (e.g. for ANC usage), a A2B transceiver as well as Automotive Ethernet (BroadR-Reach, IEEE 802.3bw-2015) and a High-Speed CAN Interface.

Despite high component density and complex high-speed circuits crispAudio managed to realize a 6-layer PCB design to save cost but still fulfill all OEM requirements.

Naturally the digital InnoPower boost supply was integrated into the design as well.

crispAudio also offers an extensive package of software libraries and building blocks for the turnkey design:

    • a comprehensive board support package including real-time operating system and drivers for all interfaces and on-board devices as well as a flexible audio processing framework
    • an OEM-grade CAN/ISOTP/UDS stack including handlers for all standard diagnostic services, DTC management etc. (optional: AutoSAR MCAL layer)
    • a NAND- (and NOR-) flash filesystem
    • a POSIX-compliant TCP/IP/Ethernet stack (incl. Support for AVB)
  • the iFidelity library, a collection of highly optimized audio algorithms especially designed for automotive applications (please refer to: http://crispaudio.de/wordpress/?page_id=806) and a powerful tuning application.

To further simplify the development of audio applications, crispAudio has partnered with DSP Concepts and integrated the Audio Weaver Core into the turnkey design.

Using the Audio Weaver Designer, customers can easily create their own signal flow by placing filters, setting their parameters, connecting audio sources with sinks etc. All changes are directly transferred into the turnkey amplifier using a USB cable without the need to recompile or load code.

By taking advantage of the pre-developments and design principles it is possible to turn OEM soundsystems within a few months from specification to mass production.

The outstanding performance of the DRA78X SOC with up to 2 integrated SIMD-DSP (750MHz) and a dedicated accelerator for vector math (e.g. calculating FIR filter chains) will enable to run even the most demanding audio applications. Algorithms for surround sound, e.g. from Dolby or DTS have already been ported and are available off-the-shelf.

crispAudio uses one of two integrated Cortex-M4 CPU cores for low latency applications (such as ANC or EC/NR).

The turnkey reference amplifier is produced in the OEM-certified factory of Gemmy Electronics in Shenzhen. Gemmy Electronics can also supply loudspeakers and cabinets providing complete audio system solutions to to OEMs.

For more information, please CONTACT us.

crispAudio unveils super cost-effective automotive amplifier platform

Schlitz/Shenzhen, 14 Sep 2018

crispAudio GmbH, a subsidiary of Dainty Gemmy Group, today announced the release of it‘s revolutionary InnoMain OEM-grade automotive amplifier platform.

By using a specially-designed System-On-Chip and latest SW algorithms for audio processing and digital power, crispAudio was able to cut electrical bill of material by 30% compared to other systems.

InnoMain is targetted at mid-range automotive sound systems with 8-12 speakers providing 400-800MFLOPS of processing power and analogue inputs plus CAN as well as A2B and Ethernet connectivity options.

Different output power configurations are available ranging from 25-40W per channel up to 150W/channel using crispAudio‘s unqiue InnoPower boost technology.

crispAudio provides a reference amplifier hardware and delivers ready-to-use SW including:

  • OEM-grade Diagnosis Stack incl. ISOTP, UDS, standard UDS services and a Bootloader
  • iFidelity audio processing framework including all required algorithms required for latest sound experience in the car
  • Digital Power control suite for boost supply
  • Drivers for all interfaces and, peripherals (e.g. CAN, A2B controller, …)
  • Real-time Operating System

InnoMain is produced in the OEM-certified factory of Gemmy Electronics in Shenzhen. Gemmy Electronics can also supply loudspeakers and cabinets providing complete audio system solutions to to OEMs.

For more information, please CONTACT us.

Our Office

Ringmauer 20
D-36110 Schlitz
Germany
Phone number: +49 6642 918 6070
Email Address: info (at) crispaudio.de