CN110472094B - Traditional music recording method - Google Patents
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- CN110472094B CN110472094B CN201910720014.3A CN201910720014A CN110472094B CN 110472094 B CN110472094 B CN 110472094B CN 201910720014 A CN201910720014 A CN 201910720014A CN 110472094 B CN110472094 B CN 110472094B
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- G06F16/60—Information retrieval; Database structures therefor; File system structures therefor of audio data
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Abstract
The invention discloses a traditional music recording method, which comprises the following steps: s1, collecting music audio; s2, carrying out music audio digitization processing; s3, screening and distinguishing music audios; s4, exporting traditional music; s5, storing the traditional music; the invention provides a traditional music recording method, which covers a series of processes of audio collection, digital processing, screening and distinguishing, exporting and storing, reasonably and effectively screens out traditional music, and names, records and stores the traditional music; the music audio collection method comprises the steps that music audio is received through a microphone, discretization sample collection is carried out on analog electric signals converted by the microphone at a certain frequency, and preliminary sampling is formed; the invention further relates to music audio digitization processing, which carries out level quantization processing on the voltage value or the current value of the collected discretization sample, converts continuous analog audio signals into discrete digital signals, namely binary 0 and 1, and is convenient to input into a computer for comparison and screening.
Description
Technical Field
The invention belongs to the technical field of music recording, and particularly relates to a traditional music recording method.
Background
Traditional music continues for thousands of years and contains a plurality of aesthetic conditions, which are centralized embodiment of special essence of certain musical thought and are crystals of musical thought consciousness. The thinking habits of a country and a nation have the function of not underestimating the formation and development of aesthetic consciousness. As one of the marks of Chinese national culture, the method has profound cultural connotation and practical significance. The text explains the diversity of music and the ethnicity of traditional music from the concept connotation that the music and the traditional music are closely related; through the analysis of the current society, the attribute of the real society, namely the 'post-modernity' is discussed; and on the basis of the analysis, the practical significance of the traditional music is analyzed and discussed.
In recent years, along with the continuous deepening of the work of protecting the non-material cultural heritage initiated by the combined country textbook organization, the government of China also pays more and more attention to the preservation and development of the traditional culture. In the non-material cultural heritage of China, traditional music is a non-trivial component, and therefore is highly valued by various circles of China. The discussion is carried out aiming at the current situation, and the analysis is carried out by combining various elements of the traditional music in China, so as to obtain measures for saving and developing the music.
However, the conventional music recording method is not comprehensive at present, and people pay no attention to recording of the conventional music, so that a conventional music recording method is provided for recording and storing the conventional music.
Disclosure of Invention
The invention aims to: in order to solve the problem of traditional music screening and recording, a traditional music recording method is provided.
The technical scheme adopted by the invention is as follows:
a traditional music recording method comprises the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, performing music audio digital processing; carrying out binary storage coding after the hierarchical quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison and network search data comparison of the server terminal;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, the music audio data signal in the hard disk is decoded by a decoding chip, the decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering.
Wherein, the audio collection in S1 comprises the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, collecting discretization samples; carrying out level quantization processing on the voltage value or the current value of the collected discretization sample;
in S2, the music audio is digitized, and the specific steps are as follows:
s201, level quantization processing; the voltage value or the current value of the collected discretization sample is subjected to level quantization processing,
s202, binary storage coding; transforming the rank values into corresponding binary representation values;
wherein, the music audio is screened and distinguished in the S3, and the specific steps are as follows:
s301, the server receives the digitized signal; a computer with internet access function and music retrieval function is prepared for receiving the digitized signal;
s302, database comparison; matching with the existing data of the database, directly selecting a matching result if a matching item exists, and recording the data by the database if the matching item does not exist;
s303, network searching and comparing; searching a network matching result through the Internet;
s304, displaying a screening result; sorting the screening results in descending order according to the similarity, and displaying the most similar results at the top;
wherein, in S4, the traditional music is derived, and the specific steps are as follows:
s401, naming audio; after the search pairing results are ranked in descending order, the search pairing results ranked at the top and having the highest similarity with the recorded music audio are named;
s402, sending music audio data and sending the named music audio data to a hard disk;
wherein, in S5, the traditional music is stored and played, and the specific steps are as follows:
s501, storing the data into a hard disk; storing the recorded music audio data into a hard disk;
s502, decoding by a decoding chip; decoding the stored data into digital signals;
s503, converting by a digital-to-analog converter; the decoded digital signal is converted into an analog signal by a digital-to-analog converter, and then an analog audio frequency is amplified;
and S504, low-pass filtering, namely transmitting the amplified analog audio to the earphone.
In the S102 discretization sample collection, discretization sample collection is performed on the analog electrical signal converted by the microphone at a certain frequency.
In the S201 level quantization processing, the voltage value or the current value of the collected discretization sample is subjected to the level quantization processing.
In the S202 binary storage encoding, the rank values are converted into corresponding binary representation values.
The server side in S301 is a computer with internet access function and music retrieval function, the S302 database comparison is that after receiving the music audio data processed digitally, the server side is paired with the existing data in the database, if there is a matching item, the matching result is directly selected, and if there is no matching item, the database records the data for later use; s303, network searching and comparing, namely searching a network matching result through the Internet if no matching result exists in the database; the step S304 is to display the screening results, in which the screening results are arranged in descending order of similarity, and the most similar results are displayed at the top.
The S401 names the audios, and the search pairing result with the highest similarity to the recorded music audio is named after the audios are ranked in descending order.
The step S501 of storing the recorded music audio data into the hard disk is to store the recorded music audio data into the hard disk; s502, decoding by a decoding chip, and S503, converting by a digital-to-analog converter; the stored data is converted into digital signals through decoding, the decoded digital signals are converted into analog signals through a digital-to-analog converter, and then analog audio is amplified; the S504 low-pass filtering process is to transmit the amplified analog audio to the earphone.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the invention provides a traditional music recording method, which covers a series of processes of audio collection, digital processing, screening, distinguishing, exporting and storing, reasonably and effectively screens out traditional music, names, records and stores, and is favorable for preserving and protecting the traditional music.
2. The music audio collection of the invention receives music audio through the microphone, and discretizes sample collection at a certain frequency by using the analog electric signal converted by the microphone to form preliminary sampling, thereby being beneficial to subsequent digital processing.
3. The invention further carries out the music audio digitization processing, carries out the level quantization processing on the voltage value or the current value of the collected discretization sample, converts the continuous analog audio signal into the discretization digital signal, namely binary 0 and 1, is convenient to input into a computer for comparison and screening, scientifically and reasonably effectively screens the selected music audio, and improves the recording efficiency.
4. The invention further discloses that the server for screening and distinguishing the music audio is a computer with an internet access function and a music retrieval function, after receiving the digitally processed music audio data, the server is matched with the existing data of the database, if a matching item exists, a matching result is directly selected, and if no matching item exists, the database records the data for later use; meanwhile, the data is paired with the existing data of the network at the same time, and the optimal result is selected for descending order display, so that the data can be perfected, the matching items can be found quickly, the selection is convenient, and the efficiency is improved.
5. The invention further derives the traditional music, names the recorded traditional music by matching the screening result with the highest similarity, simultaneously sends data to the memory, saves the traditional music and is beneficial to the standard saving of the traditional music.
6. The invention further relates to a method for storing and playing traditional music, which stores the music into a hard disk for effectively storing the traditional music for a long time, when the music needs to be played, a music audio data signal in the hard disk is decoded by a decoding chip, the stored data is converted into a digital signal through decoding, the decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog audio is amplified after being converted into the analog signal, the amplified analog audio is transmitted to an output port of an earphone or a loudspeaker through the low-pass filtering treatment, the traditional music is played by the output port of the earphone or the loudspeaker, the method is convenient and practical, the traditional music can be stored and played at any time, and the method is favorable for recording.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a simplified schematic diagram of a music audio collection process according to the present invention;
FIG. 3 is a simplified schematic diagram of a music audio digitization processing flow according to the present invention;
FIG. 4 is a simplified schematic diagram of a process for selecting music audio according to the present invention;
FIG. 5 is a simplified schematic diagram of a conventional music derivation process according to the present invention;
FIG. 6 is a flow chart illustrating a conventional music storage and playing process according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly and encompass, for example, both fixed and removable coupling as well as integral coupling; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In a first embodiment, referring to fig. 1 to 2, a conventional music recording method includes the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, carrying out music audio digitization processing; carrying out binary storage coding after the hierarchical quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison of the server terminal and network search data comparison;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
wherein, the audio collection in S1 comprises the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, discretization sample collection; and carrying out level quantization processing on the acquired discretization sample voltage value or current value.
In a second embodiment, referring to fig. 1 to 3, a conventional music recording method includes the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, carrying out music audio digitization processing; carrying out binary storage coding after the hierarchical quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison and network search data comparison of the server terminal;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
wherein, the audio collection in S1 comprises the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, discretization sample collection; carrying out level quantization processing on the voltage value or the current value of the collected discretization sample;
in S2, the music audio is digitized, and the specific steps are as follows:
s201, level quantization processing; the voltage value or the current value of the collected discretization sample is processed by grade quantization,
s202, binary storage coding; the rank values are transformed into corresponding binary representation values.
In a third embodiment, referring to fig. 1 to 4, a conventional music recording method includes the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, carrying out music audio digitization processing; carrying out binary storage coding after the grade quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison of the server terminal and network search data comparison;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to a hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
wherein, the audio collection in S1 comprises the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, discretization sample collection; carrying out level quantization processing on the voltage value or the current value of the acquired discretization sample;
in S2, the music audio is digitized, and the specific steps are as follows:
s201, level quantization processing; the voltage value or the current value of the collected discretization sample is subjected to level quantization processing,
s202, binary storage coding; transforming the rank values into corresponding binary representation values;
wherein, the music audio is screened and distinguished in the S3, and the specific steps are as follows:
s301, the server receives the digitized signal; a computer with internet access function and music retrieval function is prepared for receiving the digitized signal;
s302, database comparison; matching with the existing data of the database, directly selecting a matching result if a matching item exists, and recording the data by the database if the matching item does not exist;
s303, network searching and comparing; searching a network matching result through the Internet;
s304, displaying a screening result; the screening results were sorted in descending order of similarity, with the most similar results displayed at the top.
In a fourth embodiment, referring to fig. 1 to 5, a conventional music recording method includes the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, performing music audio digital processing; carrying out binary storage coding after the hierarchical quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison and network search data comparison of the server terminal;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
wherein, in the step S1, the audio frequency collection includes the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, collecting discretization samples; carrying out level quantization processing on the voltage value or the current value of the acquired discretization sample;
in S2, the music audio is digitized, and the specific steps are as follows:
s201, level quantization processing; the voltage value or the current value of the collected discretization sample is subjected to level quantization processing,
s202, binary storage coding; transforming the rank values into corresponding binary representation values;
wherein, the music audio is screened and distinguished in the S3, and the specific steps are as follows:
s301, the server receives the digitized signal; a computer with internet access function and music retrieval function is prepared for receiving the digitized signal;
s302, database comparison; matching with the existing data of the database, directly selecting a matching result if a matching item exists, and recording the data by the database if the matching item does not exist;
s303, network searching and comparing; searching a network matching result through the Internet;
s304, displaying a screening result; sorting the screening results in descending order according to the similarity, and displaying the most similar results at the top;
wherein, in S4, the traditional music is derived, and the specific steps are as follows:
s401, naming audio; after the search pairing results are ranked in descending order, the search pairing result ranked at the top and having the highest similarity with the recorded music audio is named;
s402, sending the music audio data and sending the named music audio data to the hard disk.
In a fifth embodiment, referring to fig. 1 to 6, a conventional music recording method includes the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, carrying out music audio digitization processing; carrying out binary storage coding after the grade quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison of the server terminal and network search data comparison;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
wherein, in the step S1, the audio frequency collection includes the following steps:
s101, recording music audio by a microphone; the microphone collects the external music audio frequency,
s102, discretization sample collection; carrying out level quantization processing on the voltage value or the current value of the acquired discretization sample;
in S2, the music audio is digitized, and the specific steps are as follows:
s201, level quantization processing; the voltage value or the current value of the collected discretization sample is processed by grade quantization,
s202, binary storage coding; transforming the rank values into corresponding binary representation values;
wherein, the music audio is screened and distinguished in the S3, and the specific steps are as follows:
s301, the server receives the digitized signal; a computer with internet access function and music retrieval function is prepared for receiving the digitized signal;
s302, database comparison; matching with the existing data of the database, directly selecting a matching result if a matching item exists, and recording the data by the database if the matching item does not exist;
s303, network searching and comparing; searching a network matching result through the Internet;
s304, displaying a screening result; sorting the screening results in descending order according to the similarity, and displaying the most similar result at the top;
wherein, in S4, the traditional music is derived, and the specific steps are as follows:
s401, naming audio; after the search pairing results are ranked in descending order, the search pairing results ranked at the top and having the highest similarity with the recorded music audio are named;
s402, sending music audio data and sending the named music audio data to a hard disk;
wherein, storing and playing traditional music in S5, the specific steps are as follows:
s501, storing the data into a hard disk; storing the recorded music audio data into a hard disk;
s502, decoding by a decoding chip; decoding the stored data into digital signals;
s503, converting by a digital-to-analog converter; the decoded digital signal is converted into an analog signal by a digital-to-analog converter, and then an analog audio frequency is amplified;
and S504, low-pass filtering, namely transmitting the amplified analog audio to the earphone.
The working principle is as follows: the invention provides a traditional music recording method, which covers a series of processes of audio collection, digital processing, screening, distinguishing, exporting and storing, reasonably and effectively screens out traditional music, names, records and stores, is favorable for retention and protection of traditional music, and is favorable for retention and protection of traditional music; the music audio collection method comprises the steps that the music audio is received through the microphone, discretization sample collection is carried out on analog electric signals converted by the microphone at a certain frequency to form preliminary sampling, and subsequent digitization processing is facilitated; the invention further carries out the music audio digitization processing, carries out the level quantization processing on the voltage value or the current value of the collected discretization sample, converts the continuous analog audio signal into the discretization digital signal, namely binary 0 and 1, is convenient to input into a computer for comparison and screening, scientifically and reasonably effectively screens the selected music audio, and improves the recording efficiency; the server for screening and distinguishing the music audio is a computer with an internet access function and a music retrieval function, after receiving the music audio data which is processed in a digital mode, the server is matched with the existing data of the database, if a matching item exists, a matching result is directly selected, and if the matching item does not exist, the database records the data for later use; meanwhile, the data is paired with the existing data of the network at the same time, and the optimal result is selected for descending order display, so that the data can be perfected, the matching items can be quickly found, the selection is convenient, and the efficiency is improved; the invention further derives the traditional music, names the input traditional music by the screening result with the highest matching similarity, and simultaneously sends data to the hard disk to store the traditional music, thereby being beneficial to the standard storage of the traditional music; the invention further relates to a method for storing and playing traditional music, which stores the music into a hard disk for effectively storing the traditional music for a long time, when the music needs to be played, a music audio data signal in the hard disk is decoded by a decoding chip, the stored data is converted into a digital signal through decoding, the decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog audio is amplified after being converted into the analog signal, the amplified analog audio is transmitted to an output port of an earphone or a loudspeaker through the low-pass filtering treatment, the traditional music is played by the output port of the earphone or the loudspeaker, the method is convenient and practical, the traditional music can be stored and played at any time, and the method is favorable for recording.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A traditional music recording method is characterized in that: the method comprises the following steps:
s1, collecting music audio; collecting sound through a microphone, and collecting discretized samples to finish primary sampling;
s2, carrying out music audio digitization processing; carrying out binary storage coding after the hierarchical quantization processing;
s3, screening and distinguishing music audios; corresponding traditional music is screened out through database comparison and network search data comparison of the server terminal;
s4, exporting traditional music; naming the search screening result with the highest similarity, and sending music audio data to the hard disk;
s5, storing and playing the traditional music; the recorded music audio data is stored in a hard disk, a music audio data signal in the hard disk is decoded by a decoding chip, a decoded digital signal is converted into an analog signal by a digital-to-analog converter, the analog signal is converted into an analog signal, the analog audio is amplified, and the amplified analog audio is transmitted to an earphone output port through the low-pass filtering;
in the step S2, the music audio is digitally processed, and the specific steps are as follows:
s201, level quantization processing; carrying out level quantization processing on the voltage value or the current value of the acquired discretization sample;
s202, binary storage coding; transforming the rank values into corresponding binary representation values;
in the S3, music audio is screened and distinguished, and the specific steps are as follows:
s301, the server receives the digitized signal; a computer with internet access function and music retrieval function is prepared for receiving the digital signal;
s302, database comparison; matching with the existing data of the database, directly selecting a matching result if a matching item exists, and recording the data by the database if the matching item does not exist;
s303, network searching and comparing; searching a network matching result through the Internet;
s304, displaying a screening result; sorting the screening results in descending order according to the similarity, and displaying the most similar results at the top;
in the step S201, the step of performing step quantization on the voltage value or the current value of the collected discretization sample; in the S202 binary storage encoding, the level value is converted into a corresponding binary representation value;
the server side in the step S301 is a computer with internet access function and music retrieval function, and the step S302 of database comparison is to pair the music audio data after receiving the digital music audio data with the existing data in the database, and if there is a matching item, the matching result is directly selected, and if there is no matching item, the database records the data for later use; s303, network searching and comparing, namely searching a network matching result through the Internet if no matching result exists in the database; the step S304 is to display the screening results, in which the screening results are arranged in descending order of similarity, and the most similar results are displayed at the top.
2. A conventional music entry method according to claim 1, wherein: in the step S1, audio collection is performed, and the specific steps are as follows:
s101, recording music audio by a microphone; the microphone collects the external music audio,
s102, collecting discretization samples; and carrying out level quantization processing on the voltage value or the current value of the acquired discretization sample.
3. A conventional music entry method according to claim 1, wherein: in the step S4, the traditional music is derived, and the specific steps are as follows:
s401, naming audio; after the search pairing results are ranked in descending order, the search pairing results ranked at the top and having the highest similarity with the recorded music audio are named;
s402, sending the music audio data and sending the named music audio data to the hard disk.
4. The conventional music recording method according to claim 3, wherein the step S5 of storing and playing conventional music comprises the following steps:
s501, storing the data into a hard disk; storing the recorded music audio data into a hard disk;
s502, decoding by a decoding chip; decoding the stored data into digital signals;
s503, converting by a digital-to-analog converter; the decoded digital signal is converted into an analog signal by a digital-to-analog converter, and then an analog audio frequency is amplified;
and S504, low-pass filtering, namely transmitting the amplified analog audio to the earphone.
5. A traditional music recording method as in claim 3, wherein the S401 named audio is named by the search pairing result which is arranged at the top and has the highest similarity with the recorded music audio after descending order.
6. The traditional music recording method according to claim 4, wherein the step S501 of storing in a hard disk is to store the recorded music audio data in the hard disk; decoding by the decoding chip S502 and converting by a digital-to-analog converter S503; the stored data is converted into digital signals through decoding, the decoded digital signals are converted into analog signals through a digital-to-analog converter, and then analog audio is amplified; the S504 low-pass filtering process is to transmit the amplified analog audio to the earphone.
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