1. "Sound" as important as "shadow"

With the growing demand for video shooting, sound recording has gradually become an area of growing concern for creators beyond video images. "Sound" and "image" have become equally important. High quality and stable reception has become a very important part of the video creation workflow, whether from the voice recording of Vlog in daily life, environmental sound collection of ecological photography, or even professional film and television creation. Sony Digital Audio Microphone was born to meet the demand of video creators for high-quality reception. Compared with the traditional analog audio microphone, it can achieve clearer and purer sound recording, and it can be used with Sony WeChat ™ The camera has become a reliable partner of users in video creation.

2. Difference between digital audio and analog audio microphone

The microphone has two types of interfaces, analog and digital audio. Most of the common microphones on the market use analog audio interfaces, and the microphone needs to be connected to the body through a 3.5mm audio cable for sound collection; Sony uses the digital audio interface supported by Mi hot shoe to realize digital audio signal transmission.

With the increasing demand for high-quality and low-noise sound recording in daily and diverse environments, Sony's "digital audio interface" is aimed at ™ Video capture users have expanded and their demands have increased, and a new generation of sound recording solution has been launched. From the original way of transmitting analog audio information to the body, digital audio signals are directly transmitted to the camera, reducing noise and signal attenuation during the conversion process, and improving the audio quality of video recording.

In addition, compared with the traditional analog signal interface, the digital audio interface has stronger anti-interference ability and is not easy to pick up noise due to the absence of redundant cables. At the same time, the sampling density is also larger, and the sound quality restoration is naturally better.

3. Advantages of digital audio microphone

Sony digital audio microphone has a built-in digital signal processor and supports digital audio interface, which can achieve low noise, clearer and purer high-quality sound. In addition, Sony's digital audio microphone has better functionality and flexibility. Without the constraints of cables, it is not allowed to purchase additional batteries separately. Some products can also realize power supply for hot boots. Finally, it can save more time for later processing of sound noise.

4. Sony Digital Audio Microphone

Sony Microphone - Sony China Online Mall (sonystyle. com. cn)

Sony's current digital audio microphones can be divided into three categories, with a total of five products, including two gun microphones: ECM-B1M and ECM-B10; Two wireless microphones: UWP-D21/D27 and ECM-W2BT; XLR-K3M microphone adapter set with Canon interface.

UWP-D21/D27 and XLR-K3M

The wireless microphone UWP-D21/D27 supports UHF band stable output and full band scanning mode, is simple and portable to set, and has IR synchronization function, which is very suitable for professional video users to conduct news interviews and program recording with FX6, FX3, Alpha 7S III and other models; The XLR-K3M microphone adapter kit supports a variety of connection methods and has rich radio control, which helps to make efficient and high-quality recordings in a wide range of applications, and can simplify the post-processing process. It is suitable for professional video teams to shoot reality shows and documentaries with equipment such as FX3 and FX6.

The above two products are more inclined to professional video shooting. For scenes with greater user demand, such as Vlog/daily video creation, gun microphones ECM-B1M and ECM-B10, and wireless microphones ECM-W2BT are required.

Gun microphone ECM-B1M

Sony gun microphone ECM-B1M adopts new signal processing technology, while realizing the compact and lightweight appearance of the microphone and the directional variability of sound recording. Built in 8 high-performance microphone units, it has advanced digital signal processing capability, and provides three optional directivity modes in a compact body of only about 99.3mm, which are strong directivity (supercardioid), single directivity (cardioid), and omnidirectivity. The directional pickup function is very excellent. When connected to the body supporting digital audio signal through the Mi multi interface hot shoe, the audio is directly transmitted to the camera as a digital signal, so as to obtain better audio quality while reducing external noise and performance degradation. At the same time, the noise reduction mode, low-noise mode and windscreen of the microphone itself also provide great help for noise elimination.

The gun microphone ECM-B1M is not only suitable for professional video users to shoot Vlog videos with Alpha 7S III, Alpha 7 IV and Alpha 7C, but also suitable for ecological photographers to shoot ecological videos with Alpha 1, Alpha 7S III and Alpha 7 IV models, such as outdoor birds.

Gun microphone ECM-B10

The gun microphone ECM-B10 can be regarded as the "youth version" of ECM-B1M. It also supports three directional modes to meet the radio requirements of different environments. Support hot shoe power supply, no need for separate battery power supply, stable outdoor shooting. There is also no need for cable connection, which can avoid unnecessary noise caused by loose or friction of the body due to accidental contact with the cable. In addition, due to the use of four high-performance microphone units, it is more compact and compact. It also avoids the microphone entering the camera when shooting with a wide-angle lens.

　　
ECM-B10 is very suitable for video lovers to use with Alpha 7 IV for live broadcast, and also for indoor evaluation with Alpha 7 IV, Alpha 7S III, ZV-E10 and other models.

Wireless microphone ECM-W2BT

The wireless microphone ECM-W2BT adopts a split design, which can connect the receiver to Sony Micro Sing ™ Camera, through Mi hot shoe supporting digital audio interface, realizes low noise digital audio recording. By improving the stability of the wireless connection between the microphone and the receiver, flexible audio recording can be achieved. In an open and barrier free environment, even if the distance is up to 200 meters, the ECM-W2BT can carry out stable transmission.

The wireless microphone ECM-W2BT has different modes of sound acquisition functions, providing users with greater creative freedom. The three recording modes include MIC mode, MIX mode and the new RCVR mode. Users can use different modes to record voice and ambient sound according to their own needs. In addition, the ECM-W2BT also provides a windscreen, which can effectively reduce wind noise when recording outdoors. The Mi hot shoe of the camera can supply auxiliary power to the receiver of the microphone, and the recording duration can be up to 9 hours.

The wireless microphone ECM-W2BT is suitable for a wide range of scenes, which can be used for outdoor vocal recording and indoor long time recording. For example, users can use Alpha 7 IV, Alpha 7C, Alpha 7S III, ZV-E10 and other models to record teaching videos, one-on-one interviews, travel, camping and meeting records.

5. Write at the end

With the gradual development of the image market to the field of dual image and video, only the high quality picture effect can no longer meet the user's perception needs, and better picture quality also needs better audio quality. As a technology leader in the imaging industry, Sony's digital audio technology can be said to be the direction and trend of camera microphone technology at present. At present, in addition to Sony, it is also gradually seen that other camera brands have begun to lay out their own digital signal transmission hot boots. From the perspective of better sound quality, smaller size, more convenient and safe connection mode and several advantages of signal transmission, It is believed that digital audio transmission is the inevitable trend of microphone development in the future.