WO2012016722A2 - Appareil destiné à générer un son qui dépend de la conduite, et véhicule à moteur - Google Patents

Appareil destiné à générer un son qui dépend de la conduite, et véhicule à moteur Download PDF

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Publication number
WO2012016722A2
WO2012016722A2 PCT/EP2011/056254 EP2011056254W WO2012016722A2 WO 2012016722 A2 WO2012016722 A2 WO 2012016722A2 EP 2011056254 W EP2011056254 W EP 2011056254W WO 2012016722 A2 WO2012016722 A2 WO 2012016722A2
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WO
WIPO (PCT)
Prior art keywords
synthesizer
vehicle
sound
vehicle state
controllable
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PCT/EP2011/056254
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English (en)
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WO2012016722A3 (fr
Inventor
Michael Strauss
Jens-Oliver Fischer
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Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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Publication of WO2012016722A2 publication Critical patent/WO2012016722A2/fr
Publication of WO2012016722A3 publication Critical patent/WO2012016722A3/fr

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/02—Synthesis of acoustic waves
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H17/00—Toy vehicles, e.g. with self-drive; ; Cranes, winches or the like; Accessories therefor
    • A63H17/26—Details; Accessories
    • A63H17/34—Arrangements for imitating the noise of motors
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63H—TOYS, e.g. TOPS, DOLLS, HOOPS OR BUILDING BLOCKS
    • A63H5/00—Musical or noise- producing devices for additional toy effects other than acoustical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q5/00—Arrangement or adaptation of acoustic signal devices
    • B60Q5/005—Arrangement or adaptation of acoustic signal devices automatically actuated
    • B60Q5/008—Arrangement or adaptation of acoustic signal devices automatically actuated for signaling silent vehicles, e.g. for warning that a hybrid or electric vehicle is approaching
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H7/00—Instruments in which the tones are synthesised from a data store, e.g. computer organs
    • G10H7/02—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/315—Sound category-dependent sound synthesis processes [Gensound] for musical use; Sound category-specific synthesis-controlling parameters or control means therefor
    • G10H2250/371—Gensound equipment, i.e. synthesizing sounds produced by man-made devices, e.g. machines
    • G10H2250/381—Road, i.e. sounds which are part of a road, street or urban traffic soundscape, e.g. automobiles, bikes, trucks, traffic, vehicle horns, collisions

Definitions

  • Embodiments of the present invention create an apparatus for generating a drive dependent sound for an engine driven vehicle. Further embodiments of the present invention create an engine driven vehicle.
  • Synthetic sound generators are used in vehicles to achieve a desired drive sound of the vehicles. Typical applications are electrical or hybrid vehicles because of the missing engine sound or the on/off switching of the engine. Furthermore, downsizing or upsizing of internal combustion engines can be acoustically masked.
  • US 5635903 illustrates a simulated sound generator for electric vehicles. Based on detected information from a start sensor, a rotational speed sensor (or a vehicle speed sensor), and an accelerator opening sensor, a simulated sound selector device controls a simulated sound source device to generate a simulated sound signal corresponding to an operating condition of an electric vehicle when it starts, runs and is accelerated or decelerated, and also controls a sound level switcher device to adjust the level of the simulated sound signal.
  • the simulated sound signal which is generated by the simulated sound source device and adjusted in level by the sound level switcher device is amplified by amplifiers, which drive respective loudspeakers to produce simulated sounds.
  • the sound level switcher device is also controlled based on an ambient noise level detected by a noise sensor.
  • WO 2010/000532 A2 illustrates an arrangement for generating a simulated operating noise of a vehicle drive unit, comprising the drive unit that has a continuously variable transmission, a noise generator, and a noise output device.
  • the noise generator generates or influences the operating noise independently of the actual speed and/or the actual load of the drive unit.
  • a vehicle comprising such an arrangement and a corresponding method are shown. Summary of the Invention
  • Embodiments of the present invention create an apparatus for generating a drive dependent sound for an engine driven vehicle.
  • the apparatus comprises a plurality of controllable synthesizers, wherein each synthesizer has stored at least one sample sound.
  • Each synthesizer is configured to generate a synthesizer output signal in response to a synthesizer control signal.
  • the apparatus further comprises a controller for mapping a plurality of vehicle state signals into a plurality of synthesizer control signals to be input into the plurality of synthesizers.
  • the apparatus comprises a mixer for mixing the synthesizer output signals to derive the drive dependent sound.
  • a plurality of controllable synthesizers are used for generating a plurality of synthesizer output signals, based on which a drive dependent sound is derived, instead of generating a sound dependent sound using just one signal synthesizer.
  • the drive dependent sound can be based on different vehicle state signals instead of taking just one vehicle state signal into account for deriving the drive dependent sound.
  • a first vehicle state signal may indicate the RPM (rounds per minute) of the engine of the vehicle and a second vehicle state signal may indicate a load of the engine of the vehicle.
  • a first synthesizer control signal for a first controllable synthesizer may be based on the first vehicle state signal and a second synthesizer control signal for a second controllable synthesizer may be based on the second vehicle control signal.
  • a first synthesizer output signal based on the RPM of the engine and a second synthesizer output signal based on the load of the engine of the vehicle can be generated, based on which the drive dependent sound is derived. Therefore, the drive dependent sound may be different for two different vehicle states, which share the same RPM but have different loads of the engine.
  • a combustion engine driven vehicle has a different sound when driving upwards at a given RPM of the engine (with a high load of the engine) than driving downwards with the engine at the given RPM (with a low load of the engine), this fact is taken into account by embodiments of the present invention using a plurality of controllable synthesizers. Such an easy differentiation between different combinations of vehicle state signals is not possible using just one controllable synthesizer.
  • one vehicle state signal is mapped to different synthesizer control signals for different synthesizers.
  • an RPM of an engine may get mapped linear to a first synthesizer control signal for a first synthesizer and furthermore quadratical to a second synthesizer control signal for a second controllable synthesizer.
  • the first controllable synthesizer and the second controllable synthesizer may comprise the same or different sample sounds. Therefore, different synthesizer output signals can be generated based on the same vehicle state signal, which is mapped differently to the different synthesizers.
  • a more realistic drive dependent sound e.g. comprising the linear mapping of the RPM of the engine and the quadratic mapping of the RPM of the engine
  • the sample sound stored on the plurality of synthesizers may be different. Furthermore, some or all of the sample sounds may be equal. Synthesizers having the same sample sounds stored can be provided by the controller with synthesizer control signals which are based on different vehicle state signals. Furthermore, it is also possible that synthesizer control signals for synthesizers having the same sample sounds stored are based on the same vehicle state signal but have a different mapping (e.g. as explained above, a linear and a quadratic mapping). Therefore, the synthesizer output signals generated by the synthesizers may be based on the same sample sounds and the same vehicle state signals, but may be different because of a different mapping of the vehicle state signals to the synthesizer control signals. Hence, a high variety of possibilities for generating the drive dependent sound is achieved by having the plurality of controllable synthesizers.
  • two synthesizer output signals from different synthesizers which are based on the same sample sound and on the same vehicle state signal may comprise different pitches because of different mappings of the vehicle state signals to the synthesizer control signals of the synthesizers in the controller, thereby achieving a natural sounding roughness of the drive dependent sound.
  • a higher signal quality of the drive dependent sound can be achieved when sample sounds are stored in the synthesizers instead of generating the sounds synthetically in the synthesizers.
  • different sample sounds in the different synthesizers in dependence on a vehicle state of the engine driven vehicle can be used for deriving the drive dependent sound, which enables a high variety of possibilities to give a driver of the engine driven vehicle a feedback of the states of the engine driven vehicle, for creating a pleasant sound of the vehicle for the driver and for generating drive dependent acoustical warning signals outside the vehicle.
  • the drive dependent sound can be changed easily by just replacing the sample sounds stored in the synthesizers with different sample sounds, without changing the rest of the apparatus.
  • different vehicles with different engines may use the same apparatus only with different sample sounds stored in their synthesizers. Therefore, embodiments of the present invention are easily adaptable to different engine driven vehicles by simply exchanging the sample sounds stored in the synthesizers.
  • a vehicle state signal may indicate a vehicle state of the vehicle and may already be available in the vehicle.
  • the apparatus may be configured to get connected to already available networks in vehicles, in which the vehicle state signals are transmitted and received. Examples for such networks are CAN (Controller Area Network) and FlexRay.
  • a vehicle state signal may indicate one of the following kinds of vehicle states: engine rounds per minute, engine torque used, engine torque not used, accelerator pedal position, clutch pedal position, brake pedal position, direction of travel (for example, forward or backward, left or right), traction control status, brake status (for example, anti-blocking system activated or not), load of an engine of the vehicle, and speed of the vehicle.
  • the controller may receive the vehicle state signals and may combine different vehicle state signals of different kinds to derive one or more synthesizer control signal. Furthermore, the controller may be configured to map chosen vehicle state signals (for example, of a certain kind) to chosen synthesizer output signals (for example, of certain synthesizers), such that the certain synthesizers are only activated if its associated vehicle state signal is received by the controller and, therefore, only if the vehicle is in the associated vehicle state. For example, a controllable synthesizer of the plurality of controllable synthesizers may be activated only if the direction of travel indicates backwards and another may be only activated if the direction of travel indicates forward.
  • chosen vehicle state signals for example, of a certain kind
  • chosen synthesizer output signals for example, of certain synthesizers
  • a controllable synthesizer of the plurality of controllable synthesizers may be configured to store a plurality of different sample sounds.
  • Each sample sound stored on the controllable synthesizer may represent a sound for a different vehicle state of one of the same kind of states (for example, different rounds per minute of the engine or different speeds of the vehicle).
  • the vehicle state being indicated by the same vehicle state signal (for example, indicating the rounds per minute of the engine or the speed).
  • the controllable synthesizer may be configured to combine two (or more) sample sounds of its stored sample sounds when the vehicle state signal indicates a vehicle state lying between the states for which the two different sample sounds are stored.
  • sample sounds stored on the synthesizers may be stored for a certain vehicle state (for example, 500 rpm or 1500 rpm) and if the vehicle state signal indicates a state for which the sample sound is not stored (for example, 700 rpm or 1700 rpm), the synthesizer may combine two (or more) sample sounds to achieve a synthesizer output signal which is a combination of the sample sounds stored on the synthesizer and is different to the sample sounds stored on the synthesizer. Therefore, only a small number of sample sounds have to be stored on the synthesizers and a dedicated sample sound for each vehicle state of the vehicle will not have to be stored, therefore, minimizing a required memory for the sample sounds of the synthesizers.
  • a controllable synthesizer may combine its stored sample sounds using pitch-shifting and/or gain fading.
  • the mixer may be configured to generate a further drive dependent sound.
  • the further drive dependent sound may be independent from the drive dependent sound.
  • the apparatus may be configured to generate two drive dependent sounds which are independent from each other.
  • a controllable synthesizer or a first group of controllable synthesizers may be associated to the drive dependent sound and a second controllable synthesizer or a second group of controllable synthesizers may be associated to the further drive dependent sound.
  • the drive dependent sound may be a vehicle interior sound and the further drive dependent sound may be a vehicle exterior sound.
  • the first controllable synthesizer or the first group of controllable synthesizers may have stored sample sounds which are adapted to an interior of the vehicle and the second controllable synthesizer or the second group of controllable synthesizers may have stored sample sounds which are adapted to an exterior of the vehicle.
  • the controller may generate the synthesizer control signals for the first controllable synthesizer or for the first group of controllable synthesizers and for the second synthesizer or for the second group of controllable synthesizers based on the same vehicle state signals.
  • the vehicle state signal mapped by the controller to the plurality of synthesizer control signals may be independent from an audio system of the vehicle.
  • control signals for controlling the audio system of the vehicle may be generated (e.g. play next song, change channel) and may be transmitted using a communication network of the vehicle (e.g. CAN or FlexRay).
  • These control signals may be independent (different) from the vehicle state signals mapped by the controller to the plurality of synthesizer control signals
  • a vehicle state is a vehicle drive state. Therefore, a vehicle state signal may be a vehicle drive state signal. In the following some examples for vehicle drive states shall be given, which can be described by such vehicle drive state signals.
  • a first vehicle state may be a state in which the vehicle drives and a second vehicle state may be a state in which the vehicle stands still. Or a first vehicle state may be a state during which the vehicle drives fast, while a second vehicle state is a state during which the vehicle drives slowly.
  • a first vehicle state is a vehicle state during which an engine of the vehicle has a high load
  • a second vehicle state is a state during which the engine of the vehicle has a low load
  • a first vehicle state is a state during which an RPM of the engine of the vehicle is high and a second vehicle state is a state during which the RPM of the engine of the vehicle is low.
  • the vehicle state signals may indicate such drive states of the vehicle mentioned above.
  • the vehicle states are related to a drive state of the vehicle.
  • Further embodiments of the present invention create an engine driven vehicle comprising an above-mentioned apparatus and at least a first speaker configured to output the drive dependent sound received from the apparatus.
  • the speaker may be configured to generate an interior vehicle sound or an exterior vehicle sound based on the drive dependent sound.
  • the engine driven vehicle may comprise a plurality of vehicle state sensors, wherein the vehicle state sensors are configured to generate the plurality of vehicle state signals.
  • Fig. 1 shows a block schematic diagram of an apparatus according to an embodiment of the present invention
  • Fig. 2a shows a block schematic diagram of an apparatus according to a further embodiment of the present invention
  • Fig. 2c shows as an example a diagram how the controllable synthesizer storing the sample sounds from Fig. 2b may vary the gain of the sample sounds in dependence of the change of the vehicle states;
  • Fig. 3 shows a block schematic diagram of an apparatus according to a further embodiment of the present invention.
  • Fig. 4 shows a block schematic diagram of an apparatus according to a further embodiment of the present invention and how this apparatus can be embedded into the vehicle electronics
  • Fig. 5 shows a block schematic diagram of an engine driven vehicle according to an embodiment of the present invention
  • Fig.6 shows a flow diagram of a method according to an embodiment of the present invention.
  • Fig. 1 shows a block schematic diagram of an apparatus 100 for generating a drive dependent sound 101 according to an embodiment of the present invention.
  • the controller 105 is configured to map a plurality of vehicle state signals 1 13a to 133m, wherein m C N into a plurality of synthesizer control signals 11 la to 11 In to be input into the plurality of synthesizers 103a to 103n.
  • the controller 105 is coupled to the synthesizers 103a to 103n to provide the synthesizer control signals 111a to 11 In based on the vehicle state signals 113a to 1 13m.
  • the plurality of synthesizers 103a to 103n are coupled to the mixer 107 to provide the plurality of synthesizer output signals 109a to 109n to the mixer 107.
  • the mixer 107 is configured to derive the drive dependent sound 101 by mixing the synthesizer output signals 109a to 109n.
  • the sample sounds stored in the controllable synthesizers 103a to 103n may be recorded or synthetically generated using external equipment and may be stored on the synthesizer 103a to 103n by a manufacturer of the apparatus 100.
  • the synthesizers 103a to 103n are configured to output their sample sounds to the mixer 107 as the synthesizer output signals 109a to 109n in response to the synthesizer control signals 11 la to 1 1 In.
  • a first synthesizer 103 a of the plurality of synthesizers 103a to 103n may be configured to combine its synthesizer control signal 1 1 1a received from the controller 105 with its stored sample sound to derive its synthesizer output signal 109a.
  • the first synthesizer 103 a may adapt a pitch or a gain of its sample sound in dependence on the received synthesizer control signal 111a.
  • the synthesizers 103a to 103n may not only output their sample sounds as the synthesizer output signals 109a to 109n, but may also vary their sample sounds in accordance with the synthesizer control signals 1 1 la to 11 In received from the controller 105.
  • the controller 105 may be configured to map the vehicle state signals 113a to 113m into at least one mixer control signal 115 to be input into the mixer 107.
  • the mixer 107 may be configured to mix the synthesizer output signals 109a to 109n in dependence on the mixer control signal 115 to derive the drive dependent sound 101.
  • the synthesizer output signals 109a to 109n and the drive dependent sound 101 may be audio signals, for example, PCM audio signals (PCM - Pulse Code Modulation).
  • the synthesizers may be wave table synthesizers.
  • Fig. 2a shows a block schematic diagram of an apparatus 200 according to a further embodiment of the present invention.
  • the apparatus 200 differs from the apparatus 100 in that it is configured to generate two drive dependent sounds 101a, 101b.
  • a controller 205 which may be an example for an implementation of the controller 105, is configured to provide eight synthesizer control signals 1 1 la to 1 1 lh to a synthesizer block of the apparatus 100, the synthesizer block comprising eight synthesizers 103a to 103h.
  • Each of the synthesizers 103a to 103h is configured to provide a synthesizer output signal 109a to 109h to a mixer 207 of the apparatus 100.
  • the controller 205 is configured to provide eight mixer control signals 115a to 115h to the mixer 207.
  • the apparatus 200 may be configured to generate and/or output the drive dependent sound 101a and the further drive dependent sound 101b simultaneously.
  • the number of eight synthesizers, eight synthesizer control signals, eight synthesizer output signals and eight mixer control signals is chosen just as an example.
  • the number of synthesizers and, therefore, the number of synthesizer control signals, mixer control signals and synthesizer output signals may be chosen arbitrarily depending on the application.
  • the number of mixer control signals may be independent from the number of synthesizers.
  • the controller 205 is configured to receive four different vehicle state signals 113a to 113d and to map the vehicle state signals 113a to 1 13d to the synthesizer control signals 111a to l l lh and to the mixer control signals 1 15a to 1 15h.
  • the number of outputs of the controller 205 is independent from the number of inputs of the controller 205.
  • the controller 205 may comprise different functionalities for mapping the vehicle state signals 1 13a to 113d to the synthesizer control signals 11 la to 11 lh and to the mixer control signals 115a to 115h.
  • the controller 205 may include look-up tables 221, constants 223, switches, and arithmetic computations (e.g. addition, subtraction, division, multiplication), which are performed on the vehicle state signals 113a to 113d, to derive the synthesizer control signals 111a to l l lh and the mixer control signals 115a to 115h.
  • look-up tables 221, constants 223, switches, and arithmetic computations e.g. addition, subtraction, division, multiplication
  • audio signals are shown with a thick arrow and control signals are shown with a thin arrow.
  • the apparatus 200 may comprise an interface 225 (for example, a FlexRay interface or a CAN interface) being configured to connect the controller 205 to a vehicle state network or vehicle state bus of the engine driven vehicle.
  • an interface 225 for example, a FlexRay interface or a CAN interface
  • each of the synthesizers 103a to 103h may comprise a sample bank, wherein each sample bank may be configured to store a plurality of sound samples.
  • a controllable synthesizer 103 a of the plurality of controllable synthesizers 103a to 103h may be configured to store a plurality of different sample sounds.
  • Each sample sound of the different sample sounds may represent a sound for a different vehicle state of one and the same kind of state (for example, rounds per minute of the engine, torque of the engine or others, such as named in the introductory part of this application). The vehicle state being indicated by the same vehicle state signal.
  • a synthesizer control signal 1 1 la for the controllable synthesizer 103a may be based on one and the same vehicle state signal or one and the same group of vehicle state signals, indicating different states of the vehicle (for example, different rounds per minute or different torques of the engine).
  • the controllable synthesizer may be configured to combine two or more of its sample sounds when the vehicle state signal indicates a vehicle state lying between the states, for which the two or more different sound samples are stored.
  • Fig. 2b shows in a table in a left column different vehicle states of the engine from the kind of rounds per minute of the engine (RPM).
  • the table shows in the right column different sample sounds which are stored in the sample bank of the controllable synthesizer 103 a.
  • Each sound sample is stored for a given vehicle state. For example, the sound sample RPM1000.wav is stored for 1000 RPM of the engine.
  • the vehicle state (e.g., the RPM) is indicated by a vehicle state signal received from the controller 205, the controller 205 maps the vehicle state signal to the synthesizer output signal 109a of the controllable synthesizer 103 a, which then combines its sample sounds based on the received synthesizer control signal 1 1 1a and, therefore, based on the vehicle state signal received by the controller 205.
  • the controller 205 maps the vehicle state signal to the synthesizer output signal 109a of the controllable synthesizer 103 a, which then combines its sample sounds based on the received synthesizer control signal 1 1 1a and, therefore, based on the vehicle state signal received by the controller 205.
  • Fig. 2c shows a possible example of how the controllable synthesizer 103a may combine the different sample sounds shown in Fig. 2b in dependence on the vehicle state.
  • the controllable synthesizer may vary a gain of the sample sounds in dependence on the vehicle state (in dependence on the rounds per minute of the engine).
  • the vehicle state in RPM
  • the gain is shown wherein 0 corresponds to no gain and 1 corresponds to maximum gain.
  • a first curve 230 shows a gain of a first sample sound ("RPM1000.WAV”) stored on the sample bank of the controllable synthesizer 103a.
  • a second curve 232 shows the gain of a second sample sound (“RPM2000.WAV”) stored on the sample bank of the controllable synthesizer.
  • a third curve 234 shows the gain of a third sample sound (“RPM4000.WAV”) stored on the sample bank of the controllable synthesizer.
  • a fourth curve 236 shows a gain of a fourth sample sound (“RPM6000.WAV”) stored on the sample bank of the controllable synthesizer 103a.
  • a gain of the sample sounds is at maximum at the vehicle states they are stored for.
  • a relationship between the gain in dependence of the RPM (gain(RPM)), and the pitch in dependence on the RPM (pitch(RPM)) can be arbitrary.
  • a controllable synthesizer of the controllable synthesizer 103a to 103h may be configured to provide the synthesizer output signal based on one, a group of or all sample sounds stored in its sample bank in dependence on the synthesizer control signal received from the controller 205. Furthermore, the controllable synthesizer may vary a pitch of the sample sounds, for example, such that the pitch of two sample sounds, which are combined to derive the synthesizer output signal, match.
  • controllable synthesizer 103a may be configured to increase a pitch of a first sample sound of the stored sample sounds and to decrease a pitch of a second sample sound of the two sample sounds, when a vehicle state indicated by the vehicle state signal is in between the vehicle state for which the first sample sound is stored and the vehicle state for which the second sample sound is stored.
  • the sample sounds stored on the plurality of controllable synthesizers 103a to 103h may be very short sounds (for example, in the range of 100 milliseconds to 5 seconds, 200 milliseconds to 3 seconds or 500 milliseconds to 1 second) and the controllable synthesizer 103a may continuously loop its sample sound or sample sounds for deriving its synthesizer output signal 109a.
  • controllable synthesizer 103a may be configured to provide a synthesizer output signal by looping its sample sound or its sample sounds (in dependence on the synthesizer control signals 11 la to 11 lh).
  • the example above was only described for one synthesizer of the plurality of synthesizers 103a to 103h, it may also be applicable to a group of the controllable synthesizers or all of the plurality of the controllable synthesizers.
  • the apparatus 200 differs from the apparatus 100 in that the mixer 207 is configured to derive a first drive dependant sound 101a and a second drive dependent sound 101b.
  • the first drive dependent sound 101a and the second drive dependent sound 101b may be dependent on each other, for example, the second drive dependent sound 101b may have a delay or a phase shift when compared to the first drive dependent sound 101a.
  • the mixer 207 may be configured to derive the first drive dependent sound 101a by mixing synthesizer output signals 109a to 109b from a first group 240 of controllable synthesizers of the plurality of controllable synthesizers 103a to 103h. Furthermore, the mixer 207 may be configured to derive the second drive dependent sound 101b by mixing synthesizer output signals 109e to 109h from a second group 242 of controllable synthesizers of the plurality of controllable synthesizers 103a to 103h.
  • the first group 240 and the second group 242 may be disjunct, i.e.
  • a synthesizer comprised in the first group 240 is not comprised in the second group 242 and vice versa.
  • the controllable synthesizers 103 a to 103 d are comprised in the first group 240 and the controllable synthesizers 103e to 103h are comprised in the second group 242.
  • each controllable synthesizer of the plurality of controllable synthesizers 103a to 103h may be associated to one of the drive dependent sounds 101a, 101b and the mixer 207 may derive the first drive dependent sound 101a based on the synthesizer output signals 109a to 109d from the first group 240 of controllable synthesizers independent on the synthesizer output signals 109e to 109h of the second group 242 of controllable synthesizers and vice versa may derive the second drive dependent sound 101b.
  • the first drive dependent sound 101a may be an interior sound and the second drive dependent sound 101b may be an exterior sound.
  • sample sounds stored on the first group 240 of controllable synthesizers may be adapted to an interior of the engine driven vehicle and sample sounds stored on the second group 242 of controllable synthesizers may be adapted to an exterior of the engine driven vehicle.
  • sound generation inside a vehicle is used for generating a pleasant environment for the driver and to inform the driver about vehicle states
  • sound generation is used for generating a pleasant engine sound and for safety relevant aspects (for example, to warn passengers of an upcoming car). Therefore, different sample sounds may be stored on the controllable synthesizers 103 a to 103 d of the first group 240 and the controllable synthesizers 103e to 103h of the second group 242.
  • an apparatus may comprise a first sample set for interior sounds and a second sample set for exterior sounds, wherein sample sounds of the first set are stored on controllable synthesizers associated to the interior of the vehicle and sample sounds of the second sample set are stored on controllable synthesizers associated to the exterior of the vehicle.
  • a warning signal may be generated, which signals a direction (for example forward or backward) to which the vehicle is driving.
  • a direction for example forward or backward
  • the sample sounds for the interior of the vehicle may be more detailed than the sample sounds for the exterior of the vehicle, as in this example a simple peep tone in the desired driving direction of the vehicle may be sufficient for warning people outside the vehicle.
  • the exterior sounds of the vehicle may be generated such that they are only perceptible in a predetermined environment (and/or direction) of the vehicle.
  • the controller 205 may comprise a control port 244 for changing the mapping of the plurality of vehicles states 113a to 113d into the plurality of synthesizer control signals 1 11a to l l lh.
  • the controller 205 may be connected to a personal computer running a so-called controller GUI (GUI - Graphical User Interface).
  • the apparatus 200 may comprise a control port 246 for changing the sample sounds stored on the controllable synthesizers 103a to 103h. Therefore, the sample sounds may be easily exchangeable without the need of changing the controllable synthesizers 103 a to 103h internally.
  • the control port 246 may be connected to a personal computer running a so-called synthesizer - GUI.
  • Fig. 3 shows a block schematic diagram of an apparatus 300 for generating a first drive dependent sound 101a and a second drive dependent sound 101b according to a further embodiment.
  • the apparatus 300 shows, as an example, a mixer 307 as a possible implementation of the mixer 107 or the mixer 207.
  • a controller 305 of the apparatus 300 differs in the mapping from the vehicle state signals 113a to 113d to the synthesizer control signals 1 11a to l l lh from the controller 205.
  • the mapping between the vehicle state signals 113a to 113d and the synthesizer control signals 11 la to 11 lh is just shown as an example.
  • audio signals are shown with a thick arrow and control signals are shown with a thin arrow.
  • the mixer 307 comprises mixing stages 350a to 350h. Each mixing stage 350a to 350h is configured to mix a synthesizer output signal 109a to 109h with a mixer control signal 115a to 115h. As an example, a first mixing stage 350h is configured to mix a first synthesizer output signal 109a from a first synthesizer 103 a with a first mixer control signal 1 15a from the controller 305 to derive a first scaled synthesizer output signal 352a. Furthermore, the mixer 307 comprises a first summing stage 354a and a second summing stage 354b.
  • the first drive dependent signal 101a may be a vehicle interior signal and the second drive dependent signal 101b may be a vehicle exterior signal.
  • the first drive dependent signal may be fed into an internal speaker or an internal speaker system of the engine driven vehicle and the second drive dependent sound 101b may be fed into an external speaker or an external speaker system of the engine driven vehicle.
  • the first volume signal 358a may be derived based on a signal from an interior microphone of the engine driven vehicle and the second volume signal 158b may be derived from a signal of an exterior microphone of the engine drive vehicle to adapt the volumes of the drive dependent signals 101a to 101b to a volume of a noise in the environments into which the drive dependent signals 101a to 101b are to be output.
  • Fig. 3 shows a possible mapping of the vehicle state signals 113a to 1 13d to the synthesizer control signals 1 1 la to 11 lh and to the mixer control signals 115a to 1 15h by the controller 305.
  • the controller 305 may be configured to derive a first synthesizer control signal 11 la by combining a first vehicle state signal 113a and a second vehicle state signal 113b, the first vehicle state signal 113a and the second vehicle state signal 1 13b being from a different kind.
  • the controller 305 may perform an arithmetic operation 325 between the first vehicle state signal 113a and the second vehicle state signal 113b.
  • the controller 305 may combine the result of the combination of the first vehicle state signal 113a and the second vehicle state signal 1 13b with a third vehicle state signal 113c to derive a synthesizer control signal.
  • the first vehicle state signal 113a is combined with the second vehicle state signal 1 13b and the result of this combination is combined with the third vehicle state signal 113c to derive a fifth synthesizer control signal l l le for the fifth synthesizer 103e.
  • the controller 305 may comprise drive state independent constant 323.
  • the controller 305 may be configured to generate a synthesizer control signal for a synthesizer of the plurality of synthesizers 103a to 103h based on the drive state independent constant independent of the plurality of the vehicle state signals 113a to 113d.
  • the synthesizer control signal l l lg for a seventh synthesizer 103g may be generated based on a constant 323 being independent from the drive state of the engine driven vehicle.
  • the controller 305 may comprise a look-up table 321 for mapping a vehicle state signal to a synthesizer control signal based on a relationship defined by the look-up table 321.
  • the third vehicle state signal 113c is mapped to an eighth synthesizer control signal l l lh and to a sixth synthesizer control signal 111 by using the look up table 321.
  • a look-up table enables the modeling of one-dimensional functions. The function is defined by a plurality of sampling points and sampling values. For every execution of the look-up table a sampling value is output which corresponds to the sampling point at the input.
  • an input value of the look-up table does not correspond to one of the sampling points, a linear interpolation is done between neighboring sampling values to calculate the output value. If the input value is smaller than the smallest sampling point, the smallest sampling point is output. If the input value is larger than the largest sampling point, the largest sampling value is output.
  • controller 305 may comprise different stages in which different combinations of the vehicle state signals 113a to 113d are performed, as an example, in a first stage arithmetic operations between the vehicle state signals 113a to 1 13d may be performed and in a second stage a mapping using look-up tables may be performed.
  • the controller 305 may be feedback free, such that input signals (for example the vehicle state signals 113a to 113d) are independent from output signals (for example the synthesizer control signals 111a to l l lh and the mixer control signals 1 15a to 1 15h).
  • input signals for example the vehicle state signals 113a to 113d
  • output signals for example the synthesizer control signals 111a to l l lh and the mixer control signals 1 15a to 1 15h.
  • the controller 305 may be configured to provide identical mixer control signals to mixing stages of the mixer 307 associated to the same group of synthesizers.
  • the controller 305 may provide four identical mixer control signals 115a to 1 15d to the mixing stages 350a to 350d being associated to the first group 240 of the controllable synthesizers, or just a first mixer control signal for the mixing stages 350a to 350d.
  • the controller 305 may provide identical mixer control signals 115e to 1 15h to the mixing stages 350e to 350h being associated to the controllable synthesizers of the second group 242 of controllable synthesizers, or just a second mixer control signal for the mixing stages 35 Oe to 35 Oh.
  • other (chosen) vehicle state signals may get mapped by the controller 305 to the plurality of synthesizer control signals 1 1 la to 11 lh.
  • the first vehicle state 113a and the second vehicle state 113b may be of a different kind.
  • the first vehicle state signal 113a may indicate the current rounds per minute of the engine
  • the second vehicle state signal 113b may indicate a currently used torque of the engine
  • the third vehicle state signal 113c may indicate a currently wasted torque of the engine
  • the fourth vehicle state signal 113d may indicate a traction control status of the engine driven vehicle.
  • Fig. 4 shows an apparatus 400 according to a further embodiment of the present invention.
  • the apparatus 400 is configured to generate a plurality of drive dependent sounds (x plus y channel audio).
  • the apparatus 400 comprises a controller 405, a functionality of which is similar to the functionality of the controller 105 of the apparatus 100.
  • the apparatus 100 comprises a wave table player 403, a functionality of which is similar to the plurality of synthesizers 103a to 103n of the apparatus 100.
  • the apparatus 400 comprises a mixer 407, a functionality of which is similar to the functionality of the mixer 107 of the apparatus 100.
  • the controller 405 is configured to receive input parameters (for example, the vehicle state signals), for example, via a gateway (for example, a high speed CAN or a FlexRay gateway).
  • the controller 405 is configured to process the input parameters (for example, to calculate control parameters for the synthesis, for example, samples, envelopes, equalizer values, mixing components etc).
  • the control parameters (for example, the synthesizer control signals) are input into the wave table player 403 for generating n plus m channel audio signals (for example, the synthesizer output signals).
  • the wave table player 403 includes a separable sound processing for every channel (for example, for every synthesizer) and for interior and exterior sound.
  • the wave table player 403 may perform an n-channel wave table synthesis (using stored sound samples) and an internal sound processing based on the control parameters (the synthesizer control signals) received from the controller 405 to determine n audio signals (synthesizer output signals). This internal wave table synthesis and this n-channel sound processing may be performed by the first group 240 of controllable synthesizers.
  • Fig. 4 shows how the apparatus 400 (also called ASD-Board, active sound design board) may be coupled with a vehicle electronic.
  • the apparatus 400 may be connected to a vehicle state network of the vehicle, such as high speed CAN or FlexRay and to an audio system, for example, comprising an audio amplifier coupled to an external speaker system and an internal speaker system.
  • Fig. 4 shows an apparatus 400 which is controllable using high speed CAN or high speed FlexRay or any other bus system outputting the vehicle state signals of an engine driven vehicle.
  • the apparatus 400 implements n parallel audio channels every one separable controllable for the interior and m parallel audio channels, every channel being separable controllable for the exterior.
  • the apparatus 400 implements a controllable mixer 407 for mixing the n audio channels to one output signal for the interior and for mixing the m audio channels to one output signal for the exterior.
  • Fig. 4 shows a parameter controlled multichannel wave table synthesizer including an integrated sound processing and a mixing stage to generate separate interior and exterior sounds for vehicles.
  • Control signals for example, vehicle state signals
  • Audio signals for example, the drive dependent sounds
  • the signal processing can be separated or can be implemented in the head unit/amplifier.
  • Embodiments may be configured to generate an engine sound for the interior (for example, the first drive dependent sound 101a) and for the exterior (for example, the second drive dependent signal 101b) of the vehicle.
  • the main focus is based on giving a feedback of drive states to the driver and on achieving a pleasant sound.
  • safety relevant aspects are the main focus.
  • Embodiments may mix single frequencies (sine generator) to emphasize or to attenuate orders of the engine.
  • Further embodiments may be configured to output the generated drive dependent sounds using an already available audio system of the car (interior) and/or using additional speakers (exterior).
  • Embodiments may be controlled using drive parameters or vehicle states, such as accelerator pedal position, engine torque, and speed.
  • Embodiments generate the drive dependent sounds using stored sound files or sample sounds (samples). Depending on the vehicle state, different samples may be used. The controlling is based on different drive parameters or vehicle state signals. Embodiments differentiate between the parameters given by the vehicle (for example, using the bus systems such as CAN or FlexRay) as input parameters and the parameters (the synthesizer control signal) for controlling the synthesis of the drive dependent sounds (controlling parameters). For the fine adjustment of the synthesis further control parameters can be calculated based on the input parameters (based on the vehicle state signals). Furthermore, given curves can be included in these calculations.
  • Some embodiments perform a separated and independent signal generation for interior sounds and exterior sound. For this, for each signal generation (for the interior and the exterior sound) an own stock of sample sounds may be stored.
  • the tone generation more than one sound sample may be played simultaneously. Every audio channel (beginning from the vehicle state signals 113a to 113d to the synthesizer output signals 109a to 109h) may be subject of its own sound processing. For this, envelopes, equalizer, delay stages and similar signal processing algorithms can be implemented (for example, in the controller 405).
  • the derived tone traces (the synthesizer output signals) finally can be mixed down to a sub-group of signals using a controllable mixer (for example, the mixer 407).
  • an apparatus may comprise further inputs (for example, for microphones in the interior of the vehicle).
  • adaptive systems with feedbacks are achievable.
  • an adjustment of the sound using psycho acoustical models can be achieved.
  • the mixing of the sounds of the different output channels can be used for deriving sounds at different places in the vehicle interior.
  • the drive dependent sound and the further drive dependent sound may be both, interior or exterior signals, to be output in the same environment, but in different directions of the environment.
  • Further embodiments may be configured to generate another drive dependent sound to be input into an interior of the vehicle.
  • Embodiments achieve a maximum signal quality by using pre-stored samples or sample sounds.
  • Further embodiments provide a scalable complexity of the control logic by using an own control module (for example, the controller 405).
  • Further embodiments of the present invention enable different sounds for different areas or directions in the exterior or the interior of a vehicle. Further embodiments provide an easy mechanism for changing the drive dependent sounds by a replaceability of the sound samples.
  • Fig. 5 shows a block schematic diagram of an engine driven vehicle 500 according to an embodiment of the present invention.
  • the engine driven vehicle 500 comprises an apparatus 100 for generating a drive dependent sound. According to further embodiments, the engine driven vehicle 500 may also comprise another apparatus for generating a drive dependent sound according to an embodiment (for example, the apparatus 200, the apparatus 300 or the apparatus 400). Furthermore, the engine driven vehicle 500 comprises a first speaker 501a configured to output the drive dependent sound 101a received from the apparatus 100.
  • the speaker 501a may be an interior speaker or an exterior speaker of the engine driven vehicle 500.
  • the engine driven vehicle 500 may comprise a second speaker 501b and the apparatus 100 may be configured to derive a further drive dependent sound 101b.
  • the first speaker 501a may be configured to output the drive dependent sound 101a into an interior of the vehicle and the second speaker 501b may be configured to output the further drive dependent sound 101b into an exterior of the engine driven vehicle.
  • the drive dependent signals 101a and 101b may be independent from each other.
  • the drive dependent sound 101a (e.g. as a first drive dependent sound) may be an exterior sound
  • the first speaker 501a may be configured to direct the drive dependent sound 101a in a first direction in the exterior of the vehicle.
  • the further drive dependent sound 101b (e.g. as a second drive dependent sound) may be an exterior sound
  • the second speaker 501b may be configured to direct the further drive dependent sound 101b in a second direction in the exterior of the vehicle.
  • the first direction being different from the second direction.
  • the first direction may be a forward driving direction and the second direction may be a backward driving direction of the vehicle.
  • Further embodiments may comprise a third speaker (e.g.
  • an interior speaker may be configured to generate another drive dependent sound (e.g. as a third drive dependent sound).
  • the third speaker may be configured to output the other drive dependent sound into the interior of the vehicle.
  • Further embodiments may comprise an array of speakers, for example, being configured to direct a drive dependent sound into a predetermined direction in the exterior of the vehicle. This predetermined direction may be controlled using beam forming techniques.
  • the use of speaker arrays in conjunction with beam forming may be applicable for the interior of the vehicle, too.
  • the engine driven vehicle 500 may comprise a plurality of vehicle state sensors 503a, 503b.
  • Each of the vehicle state sensors 503a, 503b is configured to generate a vehicle state signal 103a, 103b based on which the apparatus 100 derives the drive dependent sound 101a (and the further drive dependent sound 101b)
  • the vehicle state sensors may sense the different states of the vehicle and may continuously generate vehicle state signals.
  • Each vehicle state sensor 503a, 503b may be associated to one kind of vehicle states (examples of different kinds of vehicle states have been given already before).
  • a vehicle typically has a plurality of different vehicle state sensors 503a, 503b, each being configured to sense one or more vehicle state(s) of the vehicle.
  • vehicle state sensors may sense, engine rounds per minute, engine torque used, engine torque not used, pedal position (for example of the accelerator pedal, the brake pedal or the clutch pedal), direction of travel, traction control status, brake status, speed, or load of the engine of the vehicle.
  • a vehicle state sensor may be a microphone, e.g. sensing a volume in an interior of the vehicle or an exterior of the vehicle.
  • the engine driven vehicle 500 may comprise a vehicle electronics as shown in Fig. 4 to which the apparatus 500 is coupled, this means the engine driven vehicles 500 may comprise a high speed bus or network (such as high speed CAN or FlexRay), an audio amplifier, an external speaker system and an internal speaker system.
  • a high speed bus or network such as high speed CAN or FlexRay
  • Fig. 6 shows a flow diagram of a method 600 for generating a drive dependent sound for an engine driven vehicle.
  • the method 600 comprises a step 601 of mapping a plurality of vehicle state signals into a plurality of synthesizer control signals.
  • the step 601 may, for example, be performed by the controller 105 of the apparatus 100.
  • the method 600 comprises a step 603 of generating a plurality of synthesizer output signals in response to the plurality of synthesizer control signals based on a plurality of stored sample sounds.
  • the step 603 may be performed by the plurality of controllable synthesizers 103a to 103n.
  • the method 600 comprises a step 605 of mixing the synthesizer output signals to derive the drive dependent sound.
  • the step 605 may be performed by the mixer 107.
  • the method 600 may comprise a step of driving with the engine driven vehicle such that a vehicle state of the engine driven vehicle and the plurality of vehicle state signals change.
  • a speed of the engine driven vehicle or the RPM of the engine of the engine driven vehicle may change, and therefore the plurality of vehicles state signals also change.
  • the method 600 may comprise a step of varying the synthesizer control signals based on the changed vehicle state signals or in other words, the changed vehicle state signals may be mapped to new synthesizer control signals.
  • the method 600 may comprise a step of measuring a volume in an environment into which the drive dependent sound is to be output and a step of adapting a volume of the drive dependent sound based on the measured volume in the environment into which the drive dependent sound is to be output.
  • the method 600 may comprise a step of deriving a further drive dependent sound by mixing the synthesizer output signals, wherein the drive dependent sound is derived by mixing a first group of synthesizer output signals and the further drive dependent sound is derived by mixing a second group of synthesizer output signals.
  • the method may comprise a step of simultaneously outputting the first drive dependent sound into a first environment and the second drive dependent sound into a second environment, which is different from the first environment.
  • An engine driven vehicle for example, may be a car, a truck, a bus, a motorcycle, an electrical bike or a boat.
  • aspects have been described in the context of an apparatus, it is clear that these aspects also represent a description of the corresponding method, where a block or device corresponds to a method step or a feature of a method step. Analogously, aspects described in the context of a method step also represent a description of a corresponding block or item or feature of a corresponding apparatus.
  • Some or all of the method steps may be executed by (or using) a hardware apparatus, like for example, a microprocessor, a programmable computer or an electronic circuit. In some embodiments, some one or more of the most important method steps may be executed by such an apparatus.
  • embodiments of the invention can be implemented in hardware or in software.
  • the implementation can be performed using a digital storage medium, for example a floppy disk, a DVD, a Blue-Ray, a CD, a ROM, a PROM, an EPROM, an EEPROM or a FLASH memory, having electronically readable control signals stored thereon, which cooperate (or are capable of cooperating) with a programmable computer system such that the respective method is performed. Therefore, the digital storage medium may be computer readable.
  • Some embodiments according to the invention comprise a data carrier having electronically readable control signals, which are capable of cooperating with a programmable computer system, such that one of the methods described herein is performed.
  • inventions comprise the computer program for performing one of the methods described herein, stored on a machine readable carrier.
  • an embodiment of the inventive method is, therefore, a computer program having a program code for performing one of the methods described herein, when the computer program runs on a computer.
  • a further embodiment of the inventive methods is, therefore, a data carrier (or a digital storage medium, or a computer-readable medium) comprising, recorded thereon, the computer program for performing one of the methods described herein.
  • a further embodiment of the inventive method is, therefore, a data stream or a sequence of signals representing the computer program for performing one of the methods described herein.
  • the data stream or the sequence of signals may for example be configured to be transferred via a data communication connection, for example via the Internet.
  • a further embodiment comprises a processing means, for example a computer, or a programmable logic device, configured to or adapted to perform one of the methods described herein.
  • a processing means for example a computer, or a programmable logic device, configured to or adapted to perform one of the methods described herein.
  • a further embodiment comprises a computer having installed thereon the computer program for performing one of the methods described herein.
  • a programmable logic device for example a field programmable gate array
  • a field programmable gate array may cooperate with a microprocessor in order to perform one of the methods described herein.
  • the methods are preferably performed by any hardware apparatus.

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Abstract

Un appareil destiné à générer un son qui dépend de la conduite destiné à un véhicule à moteur comprend une pluralité de synthétiseurs qui peuvent être commandés. Chaque synthétiseur qui peut être commandé a en mémoire au moins un échantillon de son et est configuré de façon à générer un signal de sortie de synthétiseur en réponse à un signal de commande de synthétiseur. L'appareil comprend en outre un contrôleur destiné à mapper une pluralité de signaux d'état de véhicule en une pluralité de signaux de commande de synthétiseur à entrer dans la pluralité de synthétiseurs. L'appareil comprend en outre un mélangeur destiné à mélanger les signaux de sortie de synthétiseur de façon à obtenir le son qui dépend de la conduite.
PCT/EP2011/056254 2010-08-04 2011-04-19 Appareil destiné à générer un son qui dépend de la conduite, et véhicule à moteur WO2012016722A2 (fr)

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DE102011102709B4 (de) 2011-05-20 2020-08-06 RocketAudio Traffic GmbH Einrichtung zur simulierenden Erzeugung von Betriebsgeräuschen eines Fahrzeuges, insbesondere eines Kraftfahrzeuges
CN104246871B (zh) * 2012-04-02 2017-08-15 伯斯有限公司 引擎谐波增强控制
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DE112013007075B4 (de) * 2013-05-16 2020-10-08 Anden Co., Ltd. Fahrzeugannäherungs-Alarmvorrichtung
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US10515620B2 (en) * 2017-09-19 2019-12-24 Ford Global Technologies, Llc Ultrasonic noise cancellation in vehicular passenger compartment
US10065561B1 (en) 2018-01-17 2018-09-04 Harman International Industries, Incorporated System and method for vehicle noise masking
US10974729B2 (en) 2018-08-21 2021-04-13 At&T Intellectual Property I, L.P. Application and portability of vehicle functionality profiles
EP3753824A3 (fr) * 2019-06-20 2021-02-24 Toyota Jidosha Kabushiki Kaisha Système de génération de son de notification de véhicule
DE102019134348A1 (de) * 2019-12-13 2021-06-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Geräuscherzeugung in einem Kraftfahrzeug
CN112019994A (zh) * 2020-08-12 2020-12-01 武汉理工大学 一种基于虚拟扬声器构建车内扩散声场环境的方法及装置
CN114584911A (zh) * 2022-05-05 2022-06-03 科大讯飞(苏州)科技有限公司 功放调试方法、声音生成方法及装置、设备和介质

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