Device for influencing sound background in motor vehicle, has sound processor with input connected to engine sound pick-up or reproduction device, and signal output to audio/stereo system

Technical field of the invention

The present invention relates to a device for Influencing the soundscape in a motor vehicle. In particular, the invention relates to a device to the located in the passenger compartment of the motor vehicle Audio / stereo is to be connected.

Background of the invention

In today's (passenger) motor vehicles is the Passenger compartment so well isolated from the external noise, that too the sound of the drive motor is hardly inside the Motor vehicle is heard. Nevertheless, there is Automotive enthusiasts feel the need to change the sound of the engine in the car To be able to hear the passenger cell more clearly in order to To increase driving experience in this respect. Furthermore, there are many the desire to hear the sound of something other than one's own engine to hear as realistically as possible while driving to increase the driving experience so far.

The problem underlying the invention

Thus, the invention is based on the problem, a To provide a device that is simple and cost-effective way to influence the soundscape in one Motor vehicle allowed.

Inventive solution

To solve this problem, the invention teaches a Device for influencing the soundscape in one Motor vehicle with the features of claim 1.

Structure and developments of the solution according to the invention

According to the invention, the device for influencing the Soundscape in a motor vehicle attached to the Passenger compartment of the motor vehicle sonic Audio / Stereo is to connect a sound processor, the has at least one sound signal input, either with connected to a sound pickup from the Internal combustion engine of the motor vehicle generated noises detected, or is connected to a sound signal reproduction device, in the operation of an internal combustion engine reproducing Sound signals are recorded. Furthermore, the Sound processor an audio signal output to power the Audio / stereo.

In the simplest embodiment, the sound Processor a preamp, which by means of a Sound pickup in the form of a microphone detected noise of the Internal combustion engine of the motor vehicle reinforced and possibly in their tone changes (high or low sound components amplified or dampened) then over the Audio signal output of the sound processor of the audio / stereo system supply. In the audio / stereo system they will either be the local useful signal (radio program, CD or Music cassette playback signal) or instead of a other useful signal via the power amplifier of the Audio / stereo system supplied to the speakers in the passenger compartment.

This embodiment of the invention is used in particular to drivers of vehicles with very strong noise-isolated passenger compartments a sense of the internal combustion engine of the To convey motor vehicle and the sound of Internal combustion engine available to the driver.

In a further embodiment of the invention is the Sound processor, a digital control circuit, preferably in the form of a microprocessor with conventional circuitry (Program, data memory, input / output channels, etc.), the additionally activates a so-called sound chip. The Output signal of the sound chips sounds then over the Audio signal output of the audio / stereo system supplied. In the Audio / stereo will then be like the first one Embodiment of the invention either the local useful signal (Radio broadcast, CD or music cassette playback signal) highlighted or instead of another useful signal on the Power amplifier of the audio / stereo system to the speakers in supplied to the passenger compartment.

Especially in the second embodiment of the invention the sound processor has at least one Control signal input, which is set to one for operating variables of Motor vehicle characteristic engine Control signal from a corresponding control signal generator to receive.

The control signal input of the sound processor can with a Speed ​​sensor of the drive motor as a control signal generator be connected. This can especially in a motor vehicle with speed display its input signal.

Furthermore, the control signal input of the sound processor arranged with a in the motor vehicle Acceleration / deceleration sensor connected as a control signal generator be. For vehicles with Electronic Stability Program (ESP), such a sensor is present anyway, which can limit the additional equipment expense.

In addition to or instead of the speed sensor and the Acceleration / deceleration sensor can the Control signal input of the sound processor with a position and / or the movement of one or more pedals of the Motor vehicle sensing sensor (s) to be connected. The Evaluation of brake, throttle, and possibly clutch pedal position allows a very simple and realistic Modeling the sound image.

In the second embodiment of the invention, the Sound signal reproducing means a memory device, in the sound sequences of an internal combustion engine in Different operating conditions are stored. Preferably if the storage device is configured to different sound sequences of an internal combustion engine on the one hand speed range-dependent and on the other Engine load dependent record and play. This creates a at least two-dimensional data field from which the Sound processor depending on the control signal (s) of the corresponding control signal generator the corresponding Sound sequence dependent on, for example, the speed signal and the derived from the acceleration signal load state of the Internal combustion engine reads out. This is between three Load conditions (acceleration, constant speed or delay) and speed ranges (1000-1100 Rpm, 1100-1200 rpm. , , 5900-6000 rpm). The read sound sequence is then in the Sound chip still for the current speed through time Compress or expand more closely matched and played.

For this purpose, the sound processor is set up and programmed from the memory device of Sound signal reproducing means one of the sound sequences in response to Control signals at one or more of the Read control signal inputs, if necessary to modify and on the Output audio signal output.

To vary the sound played in the passenger compartment so that also sounds different Vehicle types can be represented by the sound processor an interface for data exchange with a external computer unit for a specific Vehicle / engine type characteristic sound sequences in the Memory means (12) of the sound signal reproducing means einzuspeichern.

Other features, features, benefits and possible Modifications are made for a person skilled in the art on the basis of the description below, in which the attached Drawing reference is made.

In the single figure of the drawing is a device for Influencing the soundscape in a motor vehicle with an internal combustion engine attached to the passenger compartment of the Motor vehicle sonic audio / stereo system is to be connected, illustrated schematically.

The device according to the invention has a core piece Sound Processor <b>10</b>, one - no further illustrated - Microprocessor with associated circuitry (Program, data memory, input / output channels, etc.), the additionally activates a sound chip.

The sound processor <b>10</b> has in a first embodiment a sound signal input <b>12</b> the one with a microphone <b>14</b> as Sound sensor is connected to the engine of the engine Motor vehicle generated noise to detect.

In a second embodiment, the sound processor has <b>10</b> a sound signal input <b>16</b>, with a Sound signal reproduction device <b>20</b> in the form of one with a battery <b>22</b> supported RAM data storage <b>24</b> is connected in the Operation of an internal combustion engine reproducing sound sequences in different operating states of a Internal combustion engine in the form of sound sequence files, for example as .wav files are recorded.

Furthermore, the sound processor has <b>10</b> one Audio signal output <b>26</b> for dining one in the vehicle anyway existing audio / stereo system <b>30</b> with an amplifier as well at least two speakers L, R.

Finally, the sound processor has <b>10</b> some Control signal inputs <b>32</b>. <b>34</b>. <b>36</b>. <b>38</b>. <b>40</b> that are set up a for operating variables of the drive motor of Motor vehicle characteristic control signal from corresponding Control signal transmitters <b>42</b>. <b>44</b>. <b>46</b>. <b>48</b>. <b>50</b> to receive and to forward the microprocessor to where they are preparing the sound sequence files from the RAM datastore <b>24</b> For the output to the audio / stereo system <b>30</b> used become.

The first control signal input <b>32</b> the sound processor <b>10</b> is with a tachometer of the drive motor of the Motor vehicle connected. To adapt the Speed ​​range of the internal combustion engine of the motor vehicle with the To achieve the engine speed range, the sen Klangbild be recorded in the passenger compartment of the motor vehicle is in the signal line from the tachometer <b>42</b> on programmable divider / multiplier <b>52</b> intended. This makes it possible to change the speed range of a racing car up to 18,000 revolutions per minute from the tachometer a street car with about 6,000 revolutions per minute by simply multiplying the measured speed with to reach the factor 3 and then from the data memory <b>24</b> to read out the corresponding sound sequence.

Because the sound of an internal combustion engine with a specific Speed ​​in addition (among other things) depends on whether the Motor accelerates, runs at constant speed or delayed, can additionally - to increase the realism - the second control signal input <b>34</b> the sound processor <b>10</b> arranged with a in the motor vehicle Acceleration / deceleration sensor <b>44</b> be connected.

Depending on the output signal of the Acceleration / deceleration sensor <b>44</b> then loads the sound processor <b>10</b> from the data store <b>24</b> the one for each Speed ​​range (for example 500. .1000 rpm) stored sound sequence for accelerating - up arrow in <b>FIG.</b> 1 -, constant - horizontal arrow in <b>FIG.</b> 1, or retarding - arrow down in <b>FIG.</b> 1 - Speed ​​curve and feeds for further processing into the sound chip of the sound processor <b>10</b> on.

This is the storage device <b>24</b> in a position, different sound sequences of an internal combustion engine on the one hand speed range-dependent and on the other Engine load dependent record and play.

It is for a particularly realistic sound image helpful, beside or instead of the speed and the signal the acceleration / deceleration sensor <b>44</b> the position and / or the movement of the brake, gas and clutch pedals <b>60</b>. <b>62</b>. <b>64</b> of the motor vehicle by means of the sensors <b>46</b>. <b>48</b>. <b>50</b> capture. In addition, the position of the Gear selector levers - not illustrated further - are evaluated.

Finally, the sound processor has <b>10</b> a (serial, parallel or USB) interface <b>70</b> for a data Exchange with an external computer unit for a certain vehicle / engine type characteristic Sound sequences in the memory device of To store the sound signal playback device. This can, for example from the internet or from another computer Sound files for other engines or motor vehicle types in the Inventive device are recorded.