1, the first choice to see whether the sound source is clean, is a single tone sound effect or double tone, multi-chord? Or just music? If it is required to have good sound quality and high positioning of the product voice music IC chip, it is necessary to choose a high number of seconds of the parent to improve sampling. Before writing software, we should communicate with music engineers, such as some products voice music IC chips need to be loud, and some products voice music IC coreThe chip needs to be crisp, and some products voice music IC chips should have a sense of hierarchy.
2, music segment: the part that can be repeated in the music is cut out, and the content is played back completely by arrangement and combination. Timbre: According to the fullness of the music, the degree of demand, to determine the choice of Full wave, PCT, dual tone, each timbre occupy space do not understand, timbre quality is different.
3, path planning provides the origin and destination of the path planning, set through and avoid the function. Voice prompt cordial real voice prompt, driving automatic broadcast reportName of the road. Music appreciation audio-visual enjoyment, relieve fatigue. File management Powerful resource management features.
4, the best sound quality Bluetooth headset brand: Millet BRE01JY double unit semi-in-ear headset Features: MEMS microphone wire control, moving ring + ceramic double sound unit list reason: semi-in-ear wearing structure, protect the delicate ear canal, in line with most ear shape. Soft TPE material, not easy to knot and wrap in use.
5, the first time to wear JEET Air 2, the upper ear needs to be slightly adjusted, the cavity toward the ear hole can be put on, althoughHowever, it is easy to wear without a handle, but the weight feeling after wearing is really low, and the stability of wearing is still good, even if running is not afraid to go, because it is a half-in-ear design, so the sound insulation effect of the outside world is slightly worse, want better isolation, or to bring silicone ear caps to achieve.
6, the overall sound quality is good, and the sound is added to the maximum without breaking the phenomenon.
1, music IC chip wiring figure music chip fromThe following parts are composed of: The address counter is used to specify the PC pointer (program counter) in the ROM, which is triggered every time the current frequency output delay time ends and switches to the next frequency output and delay, and the music is cleared after the end. Note Beat memory ROM is used to store frequency and delay data for music.
2, this is a soft package of music circuit, can be wired according to the following figure. If the amplifier circuit and horn are not used, the indirect piezoelectric ceramic plate on the base and negative electrode of the BG2 can directly output the audio signal.
3, this is inserted soundMusic chip, music chip is a relatively simple voice circuit, it through the internal oscillation circuit, and then the external small discrete components, you can produce a variety of music signals, music chip is an important branch of the voice integrated circuit, widely used in music electronic greeting cards, electronic toys, music candles, electronic clocks, electronic doorbells, household appliances and other occasions.
4, the method of making electronic greeting cards: ① Choose a three-fold exquisite greeting card (or hands-on production). ② Pull out the plastic isolation gasket in Figure 2 in the horizontal direction and then put the self-adhesive water paper pad of the electronic movement 180° along the dotted line (do not connect the plastic sheet together)With the fluctuation of the power grid voltage, there is a certain fluctuation, can not be constant at a certain value; 2, if the output voltage of the charger is higher than 5V, you can string a suitable resistance value of the resistance, but it is not meaningful; A better way is to find a charger with a voltage regulator function and an output voltage rating of 5V, which is sold.
IC should be 6-12v DC power supply, the white wiring of the circuit board is the AC input on the board after rectification and filtering to change the DC power supply to the 8 and 9 pins of the IC, in addition to the need for audio signal input 1 and 16 pins led lights.
From the circuit structure, R4 should be a partial voltage resistorIts size should be able to ensure that the pin voltage is between 4 and 6V before and after the IC is triggered, but it is best to have a voltage regulator diode about 3V in parallel between the foot and the ground. The R1 is obviously used to adjust the static operating point of the VT2. All the components with * in the circuit are determined when the circuit board is assembled and debugged.
Stroller music ic chip failure is solved in three ways. After a long time of use, the internal parts or materials of the voice chip approach the limit of useGradually wear out or fatigue, and eventually can no longer perform the original function. Poor circuit design, or defects in the manufacturing process, such as dust, particles, impurities and other factors, can cause voice ics to fail early before they have aged and worn out. The voice chip has a random malfunction.