Musical Greeting cards (recordable greeting cards):
Ningbo AST Industry Co.,Ltd has 17 Years Experiences to produce the greeting cards,Christmas Card,Birthday cards,Religious Cards,musical greeting cards,recordable greeting cards, Greeting cards with led lights,Pop-up Greeting cards etc.We can assure you of competive price,high quality,prompt delivery and technology supporting.
1. Musical Greeting cards Application :
The Greeting cards are usually used for celebration,promotion,birthday,Holiday and so on.
2. recordable greeting cards Classification:
There are the General Greeting Cards,Recordable Greeting cards,Music Greeting cards,Led Greeting cards and Pop-up Greeting cards.
A,General Greeting Cards,which is only paper cards,printed according to the Customers' Artwork
B.Recordable Greeting cards----The Clients can record their own messages and playback them.
C.Musical Greeting cards---The clients provide their audios,then we programmed them into the Sound module ,then it will play the customized audios.
D.Led Greeting Cards--The Greeting cards have led lights,which can flash different color.
E.Pop-up Greeting Cards
3.Sound Quality:Clearly and Loudly ( 16Khz Sampling Rate)
Recordable Gift Cards, Mother's Day Music Card, Musical Greeting Card AST Industry Co.,LTD , https://www.astsoundchip.com
4.Activated way:
Slide tongue---open the cards,it will play the message automatically.
Push buttons--press the button to play the message/audio/music
5.Long Lifespan
6.Speaker:21mm,27mm,29mm,36mm,40mm,57mm etc. Plastic or Metal
7.Battery:AA, AAA, AG13, AG10, AG3 and so on environmental
8.Size and Artwork: Customized
9.PCB:Customized Size (OEM or ODM) or our existed standard size
10.Certification:CE ,Rohs
11.Export to: USA, UK,Canada,Germany, Turkey,Russia,Poland,Switzerland,Netherland ,Frence Hungary ,Australia,New Zealand, Brazil, Columbia,Argentina,Thainland,Singapore , Malaysia and so on
The pop music concert begins with a recorded audio introduction followed by a live performance. Pop music is created through recording, and its production involves "cooking" the music until it's "burned out" in the studio. As a result, pop music concerts demand both large and small-scale sound setups. The live performance's sound requirement is to replicate the sound and effects from the pre-recorded tracks right there on stage.
Site Selection:
In pop music concerts, the venue is a key factor influencing sound quality, making the choice of venue a crucial part of the preparation process. The venue requirements for pop music concerts include:
1. Low Reverberation, Echo, and Resonance:
Venues like gyms, which have echoes and loud resonances, are unsuitable for pop music concerts since they make the sound muddy, causing unclear layers and positioning in the music. The clarity of the songs is insufficient, and instrument performances aren't distinct enough. Audiences may find the singing noisy. Similarly, acoustically treated concert halls and auditoriums are not ideal either, as their treatments cater to traditional orchestral music and natural sound bands, whereas pop music relies on electroacoustics and doesn't require such treatments to enhance volume, tone, or create a sense of space.
Suitable indoor venues include theaters and opera houses, while appropriate outdoor venues might be stadiums or open spaces. Theaters and opera houses were designed for natural sound and offer low reverberation, echo, and resonance along with high-definition conditions, fitting the requirements of pop music concerts. However, these venues often have limited seating capacity, leading to lower returns on ticket sales. Hence, outdoor stadiums that can seat thousands of people are commonly chosen for pop music concerts.
2. Low Noise:
The primary noise source in pop music concerts comes from the audience's enthusiastic cheering or excessive live sound. It's essential to focus on noise interference within 55dB(A). When selecting a venue, external noise (like traffic) and on-site noise (such as air conditioning) should also be considered.
Additionally, countertop noise can be disruptive. In venues with weak countertop structures, the "rumbling" sound when dancers move can affect the rhythm and clarity of the music.
Electrical noise also significantly impacts sound quality. Thus, pop music concerts require clean power and independent clean grounding to minimize electrical noise interference.
Sound System Layout:
Pop music concerts require a two-box performance setup, one for the stage and another for the audience. The stage serves as the performers' location and the setting for set pieces and visual art, being the focal point of the audience's attention.
Pop music concerts primarily have two audio systems: the auditorium audio system and the band and singer's audio return system.
The audio return system combines the singer's vocals and instrumental sounds to meet individual actor needs and then returns them for mutual monitoring, synchronization, and atmosphere control.
For over half a century, the stage acoustic return system has been operated using a dedicated system. The audio equipment includes a specialized return mixer and return speakers. The principle is that actors on stage can clearly hear their own and others' performances without affecting the audience. The return system generally ensures that every musician has a way back, preferably with headphones; or a small speaker close to the musician's ear is preferable. The singer's return system is more complex. Many audio designers place multiple return speakers in the range of the singer's movement. The returning sounder sends the return signal to the nearest return speaker according to the singer's position; the returning speakers and microphones on the top should be turned off to reduce interference and noise. In recent years, the application of wireless headset systems has reduced conflicts and contradictions between the return-transmission system and the auditorium system.
The auditorium audio system mainly processes the actors' voices on stage and sends them to the audience's ears. The system layout depends on whether the stage layout is single-sided, three-sided, or an intermediate platform.
The sound layout of a single-sided table is more like a home stereo, with a set of speakers arranged on both sides of the stage. The multi-channel replay of home stereo and home audio-video systems is designed to be enjoyed by one person sitting in the "emperor's position" (the best position). Therefore, the home stereo layout in the hall benefits only one person sitting in the "emperor's position," while the audience in other seats experiences different sounds. However, there hasn't been a better solution to this issue yet. Gradually, this less-than-ideal sound layout has become the acoustic feature of single-sided pop music concerts. Thus, in pop music concerts over the past half-century, audiences watch live performances and listen to home audio.
The sound layout for three-sided platforms and middle stations places a set of speakers in front of the audience and another in the center of Taichung. There are three groups on the three sides. If the stage is in the north, a set of speakers is set up in the east, south, west, and Taichung. The middle station will have a set of speakers suspended in the east, south, west, and north. Each group of speakers reproduces monaurally. Some audio designers also design the speaker layout for stereo. A set of speakers is placed on the left and right sides of the desk to simulate the 2-channel stereo layout of home audio.
Audio Function and Performance Requirements:
Every performance requiring audio has an acoustic design. The first task of the sound design for pop music concerts is to plan the performance function of the sound. The songs and performances on stage are made into audio music and technology to bring the music in the recordings to the audience's ears. These features have their technical requirements and conditions that must be met.
The technical requirements for a pop concert performance are:
1. Volume up to 105dB~110dB ±3dB.
2. Bandwidth from 50 Hz to 16 kHz.
3. Tone
The sound of a pop concert needs to be:
a. Clear gradation and positioning. This refers to the size of the instrument's volume and the sense of position before and after, left and right.
b. The singer's voice should make the audience feel intimate in the sense of hearing. That is, the sense of intimacy (distance sense) that the distance sense said at the performance venue is the effect of the early delay of the direct sound and the first reflected sound. The shorter the early delay, the better the intimacy of the venue. Pop music concerts are produced by electroacoustics. If the venue isn't intimate enough, the electroacoustic system can also assist. The intimacy in electroacoustic music lies in the low frequency. For example, a singer using a unidirectional microphone, the closer the source is to the microphone, the stronger the low-frequency effect. The proximity effect of a unidirectional microphone is a technique used in popular music singing to enhance the intimacy of the singing voice.
Pop music as a whole pays attention to the balance of high, medium, and low frequencies and adjusts according to the type of music. For instance, besides focusing on the intimacy of singing, the lyrics should also pay attention to the warmth of the accompanying music (low-frequency effect). In the adjustment system, the "mountain" type equalization can add 3dB ~ 6dB at 100Hz frequency to improve the warmth of the system. This balancing technique can be tried on individual instruments.
c. The sense of space. Pop music concerts are electroacoustic music concerts, and the sense of space doesn't need to be reflected in the venue but in the music. This sense of space is artificial and electronically crafted, unlike the spatial sense of traditional classical music recordings. The spatial sense in traditional classical music recordings is the sense of room, that is, the feeling of a small concert hall, a big concert hall, a cathedral, or a specific indoor space, while the sense of space in pop music has no specific indoor feeling; it is only an auditory effect.
d. Coverage. The range of audio coverage requirements is that each live audience will enjoy the performance at the same volume, bandwidth, tone, and the same space effect.
Sound Layout of the Band:
During pop band performances, all band members perform on stage. The pop drum is placed in the middle of the stage, as it has other players in front of it, usually placed on a platform. Other players like guitarists and keyboard players are placed on the left and right sides of the platform. The lead singer is placed in the middle of the front of the drum, next to other singers.
In a personal concert, the main performers stand on stage, and the accompanying band can be placed on stage or under the stage. Personal concerts include natural acoustic instruments and electronic instruments. To reduce mutual interference between instruments, sound designers specifically arrange the positions of the players. It's common practice to separate natural acoustic instruments from electronic instruments and electric guitars. Large-volume natural acoustic instruments like brass tubes are separated from small-volume natural acoustic instruments; such separations sometimes use transparent plastic soundproof screens.
Whether it's a band performance or a personal performance, in addition to using microphones in the sound distribution layout, other instruments like keyboard instruments and electric guitars are directly input into the mixing console after the effect. Some audio designers add a microphone to the electric guitar amplifier to pick up the electroacoustic effect of the real electric guitar from the speaker.
The direct output signal or microphone signal of all instruments on the stage is sent from the station to the distribution box and split into two. One way is connected to the returning console, and the other is connected to the mixing console of the audience system. The signal sent back to the mixer is processed and mixed and transmitted to the individual monitors of each musician in response to the needs of a musician. The signal from the mixer system of the audience system is processed and mixed and transmitted to the auditorium of the auditorium and then transmitted to the viewer's ear.
In recent years, the sound quality requirements for pop music concert sounds have become higher and higher. To meet this requirement, in addition to applying returning headphones to reduce the interference of the returning sound to the auditorium audio, the application of electronic musical instruments, including electronic drums and electronic orchestras, is also becoming increasingly popular. This helps eliminate the mutual interference of the microphones placed between the instruments, thus improving the overall clarity of the singing and the clarity of the instrumental music.
Tuner's Request:
The pop music concert is very clear about the requirements of the tuner. At the same time, the volume, tone, and balance of the singing and music are adjusted. For each song's instrument distribution, music layout, and the sound effects of each segment, you need to reach the realm of application.
The ability to record songs and instrumental music on the album originally passed through the auditorium's sound system and reappear in the audience's ears. This is an ideal target for pop music concert sound design.
June 20, 2025