Binaural recordings on CS-10EM Experience audio 3D!

"3D" is the buzz in TV and cinema, but did you know that the 3D experience is not confined solely to video? It's available for audio as well. By using a recording technique called "binaural recording" we can create audio with a 3D feel.

Use Roland's CS-10EM binaural microphones/earphones along with a field recorder such as the Roland R-05 to create professional binaural recordings quickly and easily.

CS-10EM R-05
Compact, high-quality stereo condenser microphones built into earphones

CS-10EM Product Information
Affordable Pocket Recorder with Advanced Features

R-05 Product Information
R-05 Introduction Movie

Connect the R-05 and CS-10EM Mic settings on R-05 Artist's conception of the recording and auditory field.
Connect the CS-10EM's red microphone plug into R-05's mic input jack, and its black earphone plug into the headphone jack.
  Press [MENU] to display the "Menu" screen, and select "Input Setup."

Turn Plug-in Power on.
A distinction from regular stereo imaging is that binaural recording delivers realistic audio images that surround you 360 degrees, as well as above and below, and even gives you a sense of distance. Learn more about binaural recordings here.

Experience audio 3D with the CS-10EM and R-05!

Sample binaural recordings made using Roland's CS-10EM and R-05.

Experience binaural recording from these movie and audio files. For most of these files, you'll also find recordings made with regular stereo mics for comparison.

*Please wear headphones when listening to these samples.

Steam locomotive Birds chirping Motocross City intersection
Audio file Audio file Audio file Audio file
Stereo recording Stereo recording Stereo recording
Binaural recording Binaural recording Binaural recording Binaural recording
Movie file Movie file Movie file Movie file
Passenger jet (1)   Passenger jet (2)   At a train station   Drums
Audio file Audio file Audio file Audio file
Stereo recording Stereo recording Stereo recording
Binaural recording Binaural recording Binaural recording Binaural recording
Movie file Movie file Movie file Movie file

Information on binaural recording
SHOBI University
Professor Shun-ichi Furuyama
What is binaural recording?

Binaural is also known as the "two ear effect" and is very interesting in that audio recorded in this way gives listeners a 3D audio experience. 3D video is a craze now, and you could say that binaural audio is the 3D of audio.

Binaural recordings are made using mics that are positioned near a person's eardrums, and they are played back on headphones. This creates audio with a sense of presence, making the listener feel as if he or she is actually at the location where the recording was made.

Why does it sound this way? One reason has to do with how the sounds that reach our ears are given unique signatures as they reflect and refract against body parts, including features of our ear lobes. In technical terms, this is called the head-related transfer function (HRTF). Eardrums in our ears pick up these sounds that have been altered by reflection and refraction, and this information is transmitted to the brain via complex organs in the ear. The brain is then able to recognize the location of the sound source as well as the space in which the sound was made based on subtle differences in the sound registered in our two ears, including differences in the intensity of the sound and the time the sound arrives. Therefore, by recording sounds near our eardrums ― sounds that have been colored with a signature peculiar to the human ear ― and playing these sounds back on headphones, the reproduced sounds give the illusion that you are actually listening in the physical location where the recording was made.

What happens when you listen to binaural recordings through speakers? When you do this, sounds that were originally intended only for either the right or left ear reach the respective opposite ears they were intended for as well, ruining the 3D effect. If you are listening relatively close to your speakers and place a thin, hard board ― such as a plastic writing board or cardboard ― perpendicular between your eyes so that the sounds produced on the right and left speakers only reach your right and left ears respectively, you will get a binaural effect. For you to enjoy binaural sound on your speakers, the sound must be processed using transaural processing*.

*Transaural processing: This refers to a process where the left channel signal is shifted to the opposite phase, given a very slight delay, and then mixed into the right channel, and the same is done to the right channel signal and mixed into the left channel. This allows listeners to enjoy binaural sound in the sweet spot.


The CS-10EM earphones are outfitted with binaural microphones. Typically, binaural recordings are made using a dummy head, which is a model of a human head with microphones embedded in the ear area. Dummy heads are quite expensive, which puts binaural recordings out of reach for most people.

The CS-10EM binaural mics are a type of omnidirectional electret condenser microphones mounted on the outside of the earphones. By simply wearing the mics as normal earphones, you can make binaural recordings just as you would with a dummy head. The CS-10EM is reasonably priced and compact, and can also be used as high-quality earphones so you can listen to the binaural recordings you've made on the spot.

Connect the earphones to digital field recorders such as Roland's R-05 or your video camera (must have an external mic input with a plug-in power function) to make 3D recordings. Since sound and sight create a synergistic effect, combining video with binaural sound creates an amazing sense of presence. You have to experience this for yourself.

Enjoy in binaural

Combine the CS-10EM with the Roland's R-series field recorders to create professional, hassle-free 3D recordings. You can use these recordings to impress your friends, use them as part of your sample library, or incorporate them into your music or video.

City sounds

Everyday sounds that we hear in the city make for interesting recordings. Binaural recordings let you distinguish the different sense of depth and ambience in settings such as open spaces, dense city environments, and interior spaces. The sound of passing cars, crowds, and chirping insects also make for very interesting recordings.

Binaural recordings not only capture the fore-aft and right-left positions of sounds but also their vertical positions. Record airplanes as they land, take off, or fly by. You can capture sounds with a sense of presence that you would not get from normal stereo, for example, by recording trains arriving at the station, traveling over a bridge, or approaching as you wait at a railroad crossing. Combine the recordings with video for a more interesting experience.

If used in a concert hall, the CS-10EM can record the sounds of the audience in addition to the music. Create a great sense of presence with the sounds of hands clapping and other random noises made by the audience. Another approach is to have the musicians wear the binaural mics as they perform. If worn by a pianist, for example, listeners will be able to hear how the pianist is actually hearing the sound while he or she is playing.

WAVE/MP3 Recorder R-05 [Roland]