CN210247029U

CN210247029U - DSP sound effect processing module of vehicle-mounted central control navigation system

Info

Publication number: CN210247029U
Application number: CN201921663452.2U
Authority: CN
Inventors: Huaixiang Chen; 陈怀项; Yongjian Hao; 郝永健; Weicheng Liu; 刘伟成
Original assignee: Shenzhen Dingwei Technology Co ltd
Current assignee: Shenzhen Dingwei Technology Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-04-03
Anticipated expiration: 2029-10-08

Abstract

The embodiment of the utility model discloses accuse navigation's DSP audio processing module in on-vehicle, which comprises a circuit board, the integration has DSP audio frequency processing circuit on the circuit board, the radio reception circuit, power supply control circuit and contact pin interface, DSP audio frequency processing circuit and radio reception circuit, power supply control circuit and contact pin interface electricity are connected, DSP audio frequency processing circuit adopts BU32107EFV chip, the radio reception circuit includes AM and FM radio frequency circuit, the contact pin interface includes 5 double track inputs, 6 sound channel output pins, I2S input/output pin and the coaxial input of SPDIF and output pin. The utility model discloses a circuit structure is simple, components and parts are few, and it is fixed to adopt the contact pin mode with the connected mode of mainboard interface, reduces the components and parts above the mainboard and makes things convenient for customer's production equipment.

Description

DSP sound effect processing module of vehicle-mounted central control navigation system

Technical Field

The utility model relates to an automotive electronics technical field especially relates to a accuse navigation's DSP audio processing module in on-vehicle.

Background

Most of DSP sound effect processing modules of the existing vehicle-mounted central control navigation system are integrated on a main board of the vehicle-mounted central control navigation system, and the DSP sound effect processing module has the defects of complex structure, multiple components, few functions and inconvenience in production and assembly.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve lies in, provides a accuse navigation's DSP audio processing module in on-vehicle to make the equipment production of the mainboard of being convenient for simultaneously of simplifying circuit structure.

In order to solve the technical problem, the embodiment of the utility model provides a accuse navigation's DSP audio processing module in on-vehicle, which comprises a circuit board, the integration has DSP audio processing circuit on the circuit board, the radio reception circuit, power supply control circuit and contact pin interface, DSP audio processing circuit and radio reception circuit, power supply control circuit and contact pin interface electricity are connected, DSP audio processing circuit adopts BU32107EFV chip, the radio reception circuit includes AM and FM radio frequency circuit, the contact pin interface includes 5 double track inputs, 6 sound channel output pins, I2S input/output pin and the coaxial input of SPDIF and output pin.

Further, the I2S input/output pin is also connected to ground through a capacitor.

Furthermore, the radio receiving circuit adopts a TDA7708 chip, the FM tunable range is 65MHz-108MHz, and the AM tunable range is 520kHz-1710 kHz.

The utility model has the advantages that: the utility model discloses a circuit structure is simple, components and parts are few, and it is fixed to adopt the contact pin mode with the connected mode of mainboard interface, reduces the components and parts above the mainboard and makes things convenient for customer's production equipment.

Drawings

Fig. 1 is a schematic structural diagram of a DSP sound effect processing module of the vehicle-mounted central control navigation system according to the embodiment of the present invention.

Fig. 2 is a circuit diagram of a DSP audio processing circuit according to an embodiment of the present invention.

Fig. 3 is a circuit diagram of a radio circuit according to an embodiment of the present invention.

Fig. 4 is a circuit diagram of a power supply control circuit according to an embodiment of the present invention.

Fig. 5 is a circuit diagram of a pin interface according to an embodiment of the present invention.

Fig. 6 is a schematic block diagram of the DSP sound effect processing module of the vehicle-mounted central control navigation system according to the embodiment of the present invention.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 6, a DSP sound processing module of a vehicle-mounted central navigation system according to an embodiment of the present invention includes a circuit board, and a DSP audio processing circuit, a radio circuit, a power supply control circuit, and a pin interface are integrated on the circuit board.

The DSP audio processing circuit is electrically connected with the radio receiving circuit, the power supply control circuit and the pin interface, and the DSP audio processing circuit adopts a BU32107EFV chip. The utility model discloses a DSP audio processing circuit connects digital audio I2S input outside class truns into high-quality tone quality 5.1 sound channel simulation audio output after DSP handles EQ and adjusts, and external 5 ways simulation binaural audio input commonly used can be to the sound source of input: the audio control is carried out on radio, AUX, DVD, TV and Bluetooth music, the EQ frequency is output from a 5.1 sound channel after being modulated, and the SPDIF input and output of coaxial audio can also be supported.

The radio circuit comprises AM and FM radio frequency circuits, and the pin interface comprises 5 two-channel input pins, 6-channel output pins, I2S input/output pins and SPDIF coaxial input and output pins. The utility model discloses a 6 sound channel simulation audio output maximum amplitude 2V, the sound reproduction SNR can reach and be more than or equal to 65dB, 6 output sound channels can single sound channel loudspeaker control after the processing of equalizer EQ, can divide into preceding left side, preceding right side, back left side, back right side, and the sound of weighing down at the bottom is put, the audio configuration of common use on the car, can also set up the tone quality effect of various differences in equalizer EQ the inside, if: pop, classical, rock, etc.

As an embodiment, the I2S I/o pin is also grounded through a capacitor to improve signal stability. In one embodiment, the pin interface further has a pin ground, and the grounded pin is further grounded through a resistor, so as to form a simulated lower ground resistor.

As an implementation mode, the radio receiving circuit adopts a TDA7708 chip, the FM tunable range is 65MHz-108MHz, and the AM tunable range is 520kHz-1710 kHz. The utility model discloses can support the radio reception frequency range of a plurality of countries to receive, FM practical sensitivity can reach and be less than or equal to 5dB, AM practical sensitivity can reach and be less than or equal to 14dB, the radio reception SNR can reach and be greater than or equal to 60 dB.

The utility model is developed on the Android platform, and is a one-style digital sound effect processing module which integrates a radio reception function, a volume adjustment function and a multi-band sound effect control function, and comprises 5 double-track inputs and 6 track outputs; I2S input/output, supporting SPDIF coaxial input and output; the radio receiver comprises an FM radio tuner and an AM radio tuner, and supports the RDS function; the audio supports 20HZ-20KHZ, loudspeaker sound delay is supported, the center position of a sound field can be adjusted through software control, 16-section EQ conditions are supported by default, 36-section EQ can be developed deeply, and the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a accuse navigation's DSP audio processing module in on-vehicle, including the circuit board, its characterized in that, the integration has DSP audio processing circuit on the circuit board, the radio reception circuit, power supply control circuit and contact pin interface, DSP audio processing circuit and radio reception circuit, power supply control circuit and contact pin interface electricity are connected, DSP audio processing circuit adopts BU32107EFV chip, the radio reception circuit includes AM and FM radio frequency circuit, the contact pin interface includes 5 double channel inputs, 6 sound channel output pins, I2S input/output pin and SPDIF coaxial input and output pin.

2. The DSP sound effect processing module of the vehicle central control navigation system according to claim 1, wherein the I2S input/output pin is further grounded through a capacitor.

3. The DSP sound effect processing module of the vehicle central control navigation system according to claim 1, wherein the radio receiving circuit adopts a TDA7708 chip, the FM tunable range is 65MHz-108MHz, and the AM tunable range is 520kHz-1710 kHz.