EP0999650A2 - Broadcast receiver for RDS and method of influencing the sound characteristics of the received audio signal in a broadcast receiver - Google Patents

Abstract

A radio receiver 10 for receiving radio data, in particular an RDS radio receiver, and a method for influencing a sound characteristic of an audio signal to be reproduced in a radio receiver are proposed, in which sound characteristics V1, V2, ... stored in a memory 80 are proposed. Vm for audio signals to be reproduced can be assigned to a sound influencing device 40 as a function of a program type identifier PTY transmitted via a radio transmission frequency currently set on the radio receiver frequency, so that an automatic adaptation of the sound characteristics of an audio signal to be reproduced is made possible to the program type of the program transmitted via the set radio transmission frequency. <IMAGE>

Description

State of the art

The invention relates to a radio receiver for reception of radio data, in particular RDS radio receivers, with a receiving part for setting, receiving and Demodulation of a broadcast frequency to be received, a decoder for next to a radio program via a received radio frequency transmitted radio data, a controllable sound influencing device for Control the sound characteristics of a playback Audio signal and a controller that is dependent on a as part of a set at the receiving part Broadcasting frequency transmitted radio data signal transmitted identifier of the sound influencing device assigns predetermined sound characteristics, as well as a Method for influencing a sound characteristic of a audio signal to be reproduced in a radio receiver for Reception of radio data, in particular an RDS radio receiver with a receiver for adjustment, for receiving and for demodulating one to be received Broadcasting frequency, a decoder for next to one Broadcasting program over a received broadcasting frequency transmitted radio data, and a controllable Sound influencing device for controlling the Sound characteristics of an audio signal to be reproduced the genus of independent claims.

DE 38 05 457 A1 describes a radio receiver for a Vehicle known in which by a transmitter Identification signal for a traffic program Playback volume to a preset value is switched, and the manual setting means for the Depths and highs, with the switching of Volume also an automatic by the identification signal Switching of lows and heights to preset values he follows. This is based on the knowledge that one for a music playback as a mostly pleasant increase the lows and highs in speech reproduction, in particular because of the very high lows, generally called is considered disadvantageous because the language is often too dull sounds and becomes incomprehensible. By switching the Lows and highs during a traffic announcement subjectively as optimal for the respective driver Traffic announcements for this are determined more pleasant and understandable.

According to the "Specifications of the radio data system RDS for VHF / FM sound broadcasting "by the European Broadcasting Union from March 1984 are broadcasting frequencies of Broadcasting stations in addition to the actual broadcasting programs further information in the form of digital data, such as for example, program identifiers (PI) transmitted with which a radio receiver suitable for receiving this data a variety of, especially for an undisturbed Receiving necessary operations independently and without intervention of the user, so that, for example, the Driver of a motor vehicle in which the radio receiver is installed, no manual entries on the RDS car radio must carry out and thus his attention fully on the Road traffic can concentrate.

Furthermore, within the framework of the radio data system (RDS) according to the aforementioned RDS specification for controlling a Receiving this information from a suitable radio receiver essential additional information, such as a program type identifier (Program Type PTY) to identify Art or the content of the currently received Broadcasting frequency transmitted radio program, further a so-called M / S (music / speech) code to indicate whether it yourself within the currently received Broadcast program transmitted signals around music or Voice signals, and finally a TA (traffic Announcement) Code that is played while playing Traffic news within the received Broadcasting program assumes a predetermined value and thus for example, an otherwise one muted radio receiver for the duration of a Traffic announcement enables to transmit.

Advantages of the invention

An inventive radio receiver and that Method according to the invention with the features of independent claims have the advantage that everyone Program type one over a currently received Broadcasting frequency broadcast radio program automatically assigned an optimal sound characteristic so that any type of program, whether pop music, using classical music or speech without user intervention an optimal sound is reproduced.

The sound characteristics are related to the present invention on the one hand the frequency response of the audio signal to be played back via a Frequency band-specific amplification of the audio signal can be influenced, for example, by means of an equalizer, on the other hand additional sound effects, such as Understand echo and / or Hall effects.

A particularly simple assignment of one for a specific one The type of program intended for the program is included thereby possible that the different for different Program characteristics provided sound characteristics different memory locations within a memory of the radio receiver according to the invention are stored, wherein any storage space for a sound characteristic at least another storage space for storing the associated Program type identifier (s) is assigned. That way by comparing that to that currently on the radio receiver set radio broadcasting frequency Program type identifier with the other storage locations stored program type identifiers a quick assignment a certain sound characteristic to the associated one Program type possible.

In the event that broadcasters broadcast the Do not manage program type ID dynamically, i.e. not within a radio broadcast to changing program types adjust, for example during a pop music show the program type identifier even during voice input for broadcasting pop music, it is beneficial to have one To provide switching device depending on a transmitted by means of the radio data signal Identifier a priority assignment of a given Sound characteristics to the sound influencing device of the radio receiver according to the invention instead of by the Program type identifier causes predetermined sound characteristics. This ensures that, for example, during Voice overlays within a music broadcast by the M / S identifier audio signals marked as voice signals with a sound characteristic optimized for speech signals are reproduced, which improves their intelligibility. The same applies analogously to traffic announcements within a music program that is identified by the TA identifier of the Radio data system are characterized by Control of the switching device by the TA identifier Traffic announcements with one optimized for voice signals Sound characteristics are reproduced.

After all, it is beneficial if it is for a particular one Program type predetermined sound characteristics by a User via a control unit of the radio receiver can be influenced, since the stored Sound characteristics optimal to the listening habits or preferences of the user can be adjusted can.

drawings

Embodiments of the invention are in the drawings shown and are explained in more detail below.

Show it

Figure 1 schematically shows the structure of a for receiving radio data suitable radio receiver 10 according to the invention in present part of an RDS car radio,

Figure 2 schematically shows a group of the above RDS specification specified RDS signal, by means of which among other things a program type identifier PTY, an M / S code and a traffic announcement identifier in the form of the TA code be transmitted,

Figure 3 is a flowchart of a first embodiment of the one running in a radio receiver according to the invention inventive method and

Figure 3a is a flow diagram of another Embodiment of the method according to the invention.

Description of the embodiments

The following are a radio receiver according to the invention and the method according to the invention using an RDS car radio described, in which according to a first simplest embodiment depending on the Program type identification and, if necessary, further information using the Radio data system of transmitted identifiers, the received one and audio signal to be reproduced has a sound characteristic in Form of a specific frequency response is assigned.

It is the same, although not in detail below executed, provided within the scope of the invention, one certain program type not just a specific one Frequency response but also other specific Sound characteristics, such as B. echo or Hall effects, as Allocate part of the respective sound characteristics.

Figure 1 shows schematically the structure of the invention Radio receiver using the example of an RDS car radio for Operation in a motor vehicle.

The radio receiver 10 according to the invention, here in the form of present RDS car radios, has a receiver 20, via a receiving antenna 45, in the present case one in terms of its geometry for receiving Broadcasting frequencies of the ultra shortwave (VHF) band optimized rod antenna, a received broadcast signal is fed. The receiving part 20 of the radio receiver 10 has in a known manner the for setting Reception and for demodulation of a to be received or Means received received radio frequency. The stereo multiplex signal present at the output of the receiving part 20 (MPX) is a stereo decoder 25 for Derivation of the audio signals for the left and right Stereo channel fed. Those taken from the stereo decoder 25 Audio signals for the left and right stereo channels are a sound influencing device 40, in In the present case in the form of a controllable equalizer 40 supplied, by means of which the frequency responses of the audio signals to be reproduced can be influenced. The audio signals influenced with regard to their frequency responses for the left and right stereo channels are finally a playback unit 50, which in itself in a known manner for the reproduction of the audio signals required means, such as a low frequency amplifier to amplify the audio signals and connected to them Speaker.

The stereo multiplex (MPX) present at the output of the receiving part 20 Signal is also fed to a decoder 30, that from the MPX signal that in the present case by means of Radio data system (RDS) transmitted radio data signal filtered out, decoded and from the radio data signal Program type identifier PTY, the M / S code and the TA code isolated and a controller 15 of the radio receiver feeds.

The controller 15 of the radio receiver 10 according to the invention is connected to a memory 80, which via a Storage spaces 72, 74, 76, 78 comprehensive list 70 for Storage of certain program type identifiers PTY1, PTY2, PTY3, ..., PTYn assigned frequency responses, or according to an extended execution example sound characteristics, V1, V2, ..., Vm for influencing the reproduced audio signals disposes. The different frequency responses are in the present embodiment in the form of Stored coefficients for a digital filter. Alternatively, however, it can also be provided that the Frequency responses in the form of striking points on the Storage spaces 72 to 78 of the frequency response list 70 filed become.

Furthermore, there is a further list 60 with further ones in the memory 80 Storage spaces 62, 64, 66, 68 for storing the various by means of the radio data signal over a received broadcasting frequency transmissible Program chain identifiers provided. Everybody is there Storage space 62, 64, 66, 68, that means everyone stored program type identifier PTY1, PTY2, PTY3, ..., PTYn each a frequency response V1, V2, ..., Vm from the Frequency response list 70 assigned to that for playback one by the assigned program type identifier marked audio signal is considered ideal. It is entirely possible that two different Program type identifiers, such as the Program type identifier for messages, in Figure 1 PTY2, and for Sport, in Figure 1 PTY3, assigned the same frequency response V2 is because both types of programs are such Types of programs that are primarily voice signals are reproduced, so that a storage of two separate, ultimately identical frequency responses like this is shown in Figure 1, is unnecessary. While at present embodiment of the stored Frequency response V2 for voice signals (PTY2, PTY3) one has a linear course, is the program type identifier for Pop and rock music, in Figure 1 PTY1, a frequency response V1 assigned, which is characterized in that the high and low-frequency signal components compared to the middle one Frequency range are reproduced amplified. Finally is that in the memory on the further storage location 68 PTY list 60 stored program type identifier PTYn on Memory location 78 of the frequency response list 70 frequency response Vm optimized for this type of program saved.

The controller 15 of the radio receiver according to the invention 10 also stands with the sound influencing device 40 to control them in conjunction. The controller 15 there is the task, depending on one of the currently set on the radio receiver Broadcasting frequency transmitted PTY codes of the Sound influencing device 40 according to the PTY code assign assigned frequency response.

The sound influencing device 40 is in the present case in the form of one for influencing the frequency responses of the two stereo channels digital filter. To assign one to one of the memory locations 62 to 68 of the memory 80 Frequency responses become the sound influencing device 40 or the digital filters on the respective storage space 72 to 78 Filter coefficients supplied by the controller 15.

Finally, the controller 15 of the invention Broadcast receiver 10 has an input unit 35 in the Drawing not shown controls, preferably in the form of the various to be influenced Sliders assigned to frequency bands, connected. In view of the present invention Input unit 35 for entering a user-defined Frequency response in the form of frequency band specific Gain factors provided by means of the slider, where when receiving a via a currently on Broadcast receiver set radio broadcast frequency program type identifier PTY transmitted by the user the control unit 35 entered user-defined Frequency response by the controller 15 of the radio receiver in the memory location 72, 74, 76, 78 of the frequency response list 70 is written into the memory 80, the current received PTY code or the type of via the currently set on the radio receiver Broadcasting frequency transmitted radio program assigned.

Has the ability to enter custom frequency responses the input unit 35 according to a first embodiment of a radio receiver 10 according to the invention on the assigned to different influenceable frequency bands Slider, by their targeted actuation by the User a frequency response on the input unit 35 is adjustable. The controller 15 is so for this case trained that the adjusted by means of the slider Gain factors at the center frequencies of the influenceable frequency bands, for example nine are independently influenceable frequency bands for example the center frequencies 40 Hz, 120 Hz, 250 Hz, 500 Hz, 1KHz, 2 KHz, 4 KHz, 8 KHz, 16 KHz, in Coefficients for the digital filters of the Sound influencing device 40 are converted. The calculated coefficients are then on one of the Memory locations 72 to 78 of the frequency response list 70 des Memory 80 filed.

In a further embodiment of a The radio receiver according to the invention includes the Input unit 35 push buttons to select one adjusting frequency band, as well as a rocker switch or a rotary knob for adjusting the gain value for the selected frequency band. After renewed Press the selection button for the selected frequency band after adjusting the gain value, or after Expiration of a predetermined period of time after a last time Press the rocker button or the rotary knob becomes the set gain value from the controller adopted and a new one due to the adjusted value Calculated coefficient set, which is then in memory 80 is filed.

In a further embodiment of the invention Of the radio receiver is the sound influencing device 40 in the form of an analog equalizer, that is the Sound influencing device 40 has a large number of 5 analog bandpasses, for example Center frequencies logarithmic, for example with Values of 50 Hz, 200 Hz, 500 Hz, 3.2 KHz, 12.8 KHz, above the audio frequency band are distributed. In this case the gain values V1, V2, ..., Vm for the Center frequencies of the frequency bands to be adjusted filed and with changing PTY code, for example in Follow the selection of a new radio station to which Sound influencing device 40 transmitted. In this Case where there are no coefficients for digital filters, but amplification factors for analog bandpasses is saved, is a conversion of the Control unit 35 entered strengthening values by the Control 15 not required.

FIG. 2 schematically shows a section of an according to the radio data signal 100 transmitted to the radio data system, that according to the RDS specification mentioned in Groups 105 is divided into 106 bits each. Every group in turn comprises four blocks 110, 120, 130 and 140 of 26 bits each, in the RDS specification as blocks A, B, C, D, each block an information part 112, 122, 132, 142 and a so-called check word with superimposed offset word 114, 124, 134, 144. The actual ones, by means of the radio data signal Information to be transmitted is in the Information words 112, 122, 132, 142 of blocks A, B, C, D (corresponding to reference numerals 110, 120, 130, 140) included, while the 10-bit test and Offset words 114, 124, 134, 144 of each block of the Error detection and / or correction (check word), as well as the Synchronization (offset word) of an RDS radio receiver serve on the radio data signal.

• einem Gruppentypcode 150 von 4 Bit Länge, im vorliegenden Falle ist dies der Gruppentypcode 0, der zusammen mit einem Versionscode 152 von 1 Bit Länge, der die Version der Gruppe angibt, im vorliegenden Fall A, den Aufbau und den Dateninhalt der in dieser Gruppe übertragenen Informationen anzeigt,
• einem TP-(Traffic Program-) Code 154, der angibt, ob im Rahmen des über die aktuell am Rundfunkempfänger eingestellte Rundfunksendefrequenz übertragenen Rundfunkprogramms Verkehrsnachrichten ausgestrahlt werden,
• einem PTY-(Program Type-) Code 156, das heißt einer Programmartkennung zur Angabe der Art (z. B. Pop-Musik, klassische Musik, Nachrichten, Sport, ...) des über die aktuell empfangene Rundfunksendefrequenz übertragenen Rundfunkprogramms,
• einem TA-(Traffic Anouncment-) Code 158, der dann einen vorbestimmten Wert annimmt, wenn im Rahmen des über die aktuell empfangene Rundfunksendefrequenz ausgestrahlten Rundfunkprogramms eine Verkehrsfunk- Durchsage ausgestrahlt wird,
• einem M/S-(Music/Speech-) Code 160, der angibt, ob das im Rahmen des über die aktuell am Rundfunkempfänger eingestellte Rundfunksendefrequenz übertragenen Rundfunkprogramms übertragene Audiosignal ein Musik- oder Sprachsignal ist, und
• weiteren nicht näher erläuterten Informationen im Umfang der verbleibenden 3 Bit des Datenworts 122 des Blocks B 120 der Gruppe vom Typ 0A des Radio-Daten-Signals.

According to the RDS specification mentioned, it is provided that, for the transmission of different types of data or information content, different group types, each with the same basic structure, are transmitted in the radio data signal as required. An example of this is the group type 0A, in the first block A 110 of which a program identification (Program Identification PI) is transmitted, which indicates which program is being broadcast via the radio broadcasting frequency just received. The information word 122 of the second block B 120, group 0A, is composed

• a group type code 150 of 4 bits in length, in the present case this is the group type code 0, which together with a version code 152 of 1 bit length, which indicates the version of the group, in the present case A, the structure and the data content of those transmitted in this group Displays information
• a TP (Traffic Program) code 154, which indicates whether traffic information is being broadcast as part of the radio program currently being broadcast on the radio receiver frequency set on the radio receiver,
• a PTY (program type) code 156, that is a program type identifier for specifying the type (e.g. pop music, classical music, news, sports, ...) of the radio program transmitted via the currently received radio broadcast frequency,
• a TA (Traffic Anouncment) code 158, which then assumes a predetermined value if a traffic announcement is broadcast as part of the radio program broadcast over the currently received radio broadcast frequency,
• an M / S (Music / Speech) code 160, which indicates whether the audio signal transmitted as part of the radio program transmitted via the radio program currently set on the radio receiver frequency is a music or speech signal, and
• further information not explained in the scope of the remaining 3 bits of data word 122 of block B 120 of the group of type 0A of the radio data signal.

Figure 3 shows a flow chart for an inventive Method in the present embodiment in the form of software in the controller 15 of the invention Broadcast receiver 10 is implemented.

The sequence according to the invention begins with step 200, for example, by switching on the invention Radio receiver. In step 205, the Decoder 30 of the radio receiver according to the invention in addition to the actual radio program on the Receiving part set broadcast radio frequency transmitted Additional information of the radio data signal, in the present If the program type identifier PTY 156, the M / S code 160 and TA code 158 evaluated. In step 210 it is checked whether the M / S code a predetermined, a speech signal has characteristic value. If this is not the case, then the flow continues to step 215 where checked whether the TA code is one, a traffic announcement indicating predetermined value. If not If so, in step 220 the memory 80 of the Radio receiver 10 according to the invention in the PTY list 60 the other storage location 62, 64, 66, 68 is sought, on which a PTY code PTY1, PTY2, PTY3, ..., PTYn is saved, which with the current on Broadcast receiver set radio broadcast frequency transmitted PTY code matches. Then it turns out the memory location 72, 74, 76, 78 of the frequency response list 70 in the memory 80 that frequency response V1, V2, ..., Vm selected, its assigned PTY code via the current received radio frequency is received. On it in step 230 of the sound influencing device 40 of the radio receiver 10 according to the invention by means of Control 15 the selected frequency response V1, V2, Vm in the form the stored filter coefficients respectively frequency band-specific gain factors assigned. The process then continues with step 205, that is to say Reading in the PTY, M / S and TA codes again.

On the other hand, if it is determined in step 210 that the M / S code a predetermined value characterizing speech signals has assumed, or it is determined in step 215 that the TA code broadcasts a traffic announcement is displayed, then in step 235 a memory for Speech signals intended frequency response V2 sought, and this then in step 230 of Sound influencing device 40 assigned. In this way a switching device is implemented in software, which depending on the in the context of the radio data signal the received broadcast frequency transmitted M / S or a priority assignment of a for the TA identifier Speech signals predetermined frequency response to the Sound influencing device 40 instead of that by the Program type identifier of predetermined frequency response causes if one of the two identifiers assumes a predetermined value, which is the transmission of a voice signal respectively a traffic announcement.

In another shown in Figure 3a Embodiment takes place after the start of sequence according to the invention in step 200, for example with switching on the radio receiver, a check 250 whether the automatic program-controlled Frequency response influencing is switched on or not. Is the automatic frequency response control is switched on, see above the sequence according to the invention with steps 205 to 230 or 235 continued according to FIG. 3. Becomes however, determined in step 250 that the automatic PTY code-dependent frequency response influence switched off is, in step 255 a user currently on the Operating device 35, for example by adjusting the assigned to the influenceable frequency bands Sliders, given frequency response and by means of the controller 15 in step 230 Sound influencing device 40 assigned.

The user is then informed in step 260 of the Possibility granted a stored frequency response V1, V2, ..., Vm to change. The user decides for changing a stored frequency response what is determined in step 260, then in step 265 a user-defined input unit 265 Frequency response can be specified, which is then via the Controller 15 on that of memory locations 72, 74, 76, 78 the frequency response list is saved to the one PTY code is assigned, which is currently on the Broadcast receiver set radio broadcast frequency is transmitted.

Alternatively, however, it can also be provided that the A user for a freely selectable PTY code User-defined frequency response using the control unit 35 can specify and save. To do this are according to Setting a corresponding operating mode, for example by selection in a display unit shown menu, by means of the aforementioned rocker button stored in the further storage spaces 62, 64, 66, 68 PTY codes or the frequency responses assigned to them V1, V2, ..., Vm selectable by the user. After selecting one Frequency response, for example by operating a Confirmation button on the control unit 35 or by Wait for a specified minimum period of time after the last time the rocker button is pressed, this is in adjustable way described.

As mentioned at the beginning, the invention is not based on this limited, a certain type of program or audio signal type assign a specific frequency response, rather it is according to an alternative embodiment provided that a complete, for each program or signal type specific sound characteristics with a specific Frequency response and other specific sound characteristics, such as echo and / or reverb effects.

For this purpose, instead of the frequency responses V1, ..., Vm in the memory 80 with the radio receiver according to the invention all for the specific influencing of the Sound characteristics required information filed.

This alternative embodiment is advantageous to influence the audio signals, i.e. as Sound influencing device, a digital one Signal processor used, in which a suitable Programming the desired sound effects in a simple way and display it in the form of digital filters, whereby an influence on the sound effects by simple Exchange of filter coefficients for the digital filters can be done.

The fact that the subject of the invention using an RDS car radio has been explained, however, does not mean that the Invention would be limited to an RDS car radio. Much more are suitable both the radio receiver according to the invention, as well as the method according to the invention for use any broadcast data transmission systems that transmit for example DAB (Digital Audio Broadcasting) digital broadcasting or for according to the Japanese DARC respectively SWIFT standard broadcast Radio programs.

Claims (10)

Radio receiver (10) for receiving radio data, in particular RDS radio receivers a receiving part (20) for setting, receiving and demodulating a radio transmission frequency to be received, a decoder (30) for radio data transmitted along with a radio program via a received radio transmission frequency, a controllable sound influencing device (40), in particular an equalizer or digital signal processor, for controlling the sound characteristic of an audio signal to be reproduced, and a controller (15) which assigns a predetermined sound characteristic to the sound influencing device (40) as a function of an identifier transmitted as part of a radio data signal set on the radio transmission frequency set at the receiving part, characterized, that a memory (80) with memory locations (72, 74, 76, 78) is provided for storing sound characteristics for audio signals to be reproduced, and that the identifier, on the basis of which the sound influencing device (40) is controlled, is a program type identifier which specifies which type of program content is currently being transmitted via the currently received radio broadcasting frequency. Radio receiver according to claim 1, characterized in that the identifier is via the radio data system (RDS) one currently set on the receiving part (20) Broadcasting frequency transmitted program type identifier (PTY) is. Radio receiver according to one of the preceding claims, characterized in that in the memory (80) each memory location (72, 74, 76, 78) for a sound characteristic at least one further memory location (62, 64, 66, 68) for storing one of the stored Sound characteristic is assigned to the associated program type identifier, and that the controller (15) is designed to store the sound characteristic of the sound influencing device (72, 74, 76, 78) stored in the memory location (72, 74, 76, 78) assigned to the further memory location (62, 64, 66, 68) on which the currently received program type identifier is stored. 40). Radio receiver according to one of the preceding claims, characterized by
a switching device which, depending on a further identifier transmitted in the context of the radio data signal via the received radio broadcast frequency, effects a priority assignment of a predetermined sound characteristic to the sound influencing device (40) instead of the sound characteristic predetermined by the program type identifier if the further identifier has a predetermined value assumes. Radio receiver according to claim 4, characterized in that the further identifier is the M / S identifier of the radio data system (RDS), which indicates whether music or speech signals are currently being transmitted within the radio program transmitted via the currently received radio transmission frequency, and that the switching device is designed to effect an assignment of a sound characteristic predetermined for speech signals to the sound influencing device (40) when the received M / S identifier indicates the transmission of speech signals. Radio receiver according to claim 4, characterized in that the further identifier is the TA identifier of the radio data system (RDS), which indicates whether a traffic announcement is currently being transmitted within the radio program transmitted via the currently received radio transmission frequency, and that the switching device is designed to effect an assignment of a sound characteristic predetermined for speech signals to the sound influencing device (40) when the received TA identifier indicates the transmission of traffic announcements. Radio receiver according to one of the preceding claims, characterized by
an operating unit (35) via which the user can input a user-defined sound characteristic for a program type identifier and can be stored in the memory (80). Method for influencing a sound characteristic of an audio signal to be reproduced in a radio receiver for receiving radio data, in particular an RDS radio receiver a receiving part (20) for setting, receiving and demodulating a radio transmission frequency to be received, a decoder (30) for radio data transmitted along with a radio program via a received radio transmission frequency, and a controllable sound influencing device (40), in particular an equalizer or digital signal processor, for controlling the sound characteristics of an audio signal to be reproduced, characterized,
that the sound influencing device (40) depends on a program type identifier which is transmitted as part of a radio data signal transmitted via a radio transmission frequency set at the receiving part (20) and which specifies which type of program content is currently being transmitted via the currently received radio transmission frequency one of a plurality of sound characteristics stored in a memory (80) is assigned. A method according to claim 8, characterized in
that the program type identifier, as a function of which the sound influencing device is assigned a sound characteristic which is transmitted by means of the radio data system (RDS) via a program type identifier (PTY) currently set on the receiving part (20) for the radio transmission frequency. Method according to one of the preceding method claims, characterized in that
that a further identifier transmitted in the context of the radio data signal currently being transmitted via the radio broadcasting frequency is evaluated in such a way that when the further identifier assumes a predetermined value, the sound influencing device (40) takes precedence over the sound characteristic assigned to the received program type identifier Sound characteristic is assigned.

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