Olympus manual High-quality linear PCM recording capability, Features of the LS-10, Linear PCM

High-quality linear PCM recording capability

High-sensitivity built-in microphones for high-quality recording

Features of the LS-10

Multi-format compatibility

Newly developed to accurately capture any type of sound, the LS-10's high-sensitivity microphones are accommodated in vibration- resistant housings made of machined aluminum. The size and aperture shape of the housings are designed to optimize basic microphone performance parameters such a frequency response and directivity, ensuring maximum quality. To produce recordings with a natural, expansive stereo feel, the left and right microphones are installed in an outward facing layout at angles of 90°.

Microphone Case

Mesh Screen

Filter

Mesh Grille

Microphone Unit

Shock Absorber

Side Net

Microphone Holder

Bottom Cap

Low-vibration microphone structure

Supported recording formats include the MP3 and WMA formats that are widely used in Internet file distributions and are suitable for long-term recording, as well as the linear PCM (WAV) format. Select the optimum recording mode according to the purpose and usage of each recording.

Comparison of file capacity between recording formats (Reference values)

	Rec Mode	Capacity used per minute	Main purpose
	96 kHz/24-bit	Approx. 51 MB
Linear PCM	96 kHz/16-bit	Approx. 26 MB
	48 kHz/24-bit	Approx. 20 MB	Mastering, professional use
(WAV)	48 kHz/16-bit	Approx. 13 MB
	44.1 kHz/24-bit	Approx. 17 MB
	44.1 kHz/16-bit	Approx. 11 MB	Music CD production
MP3	320 kbps	Approx. 2.4 MB	Network distribution,
	256 kbps	Approx. 1.9 MB
			long-term recording
	128 kbps	Approx. 0.9 MB

High audio quality microphone amplifier circuitry

WMA	160 kbps	Approx. 1.2 MB	Playback on Windows,
	128 kbps	Approx. 1 MB
			long-term recording
	64 kbps	Approx. 0.5 MB

The microphone amplifier circuitry is divided into independent left and right channels to eliminate interference between channels. The analog circuitry is powered by an independent power supply provided separately from the digital power supply. In addition, the system control (digital processing) and audio processing use independent circuit boards to ensure clear signal transmission and high S/N.

System Control Board Audio Board

Analog Power Supply (Independent from Digital Board)

L/R Independent

Microphone Amp

Circuits

Separate system control (digital)/audio processing boards

•The values shown are reference values.

Recommended setups for different applications

Recording settings can be adjusted to suit the needs of different recording situations. Note that the examples listed in the following table are typical setups that may require further adjustment depending on the target sound source and ambient conditions. Experiment with the different setups and select the most optimum one.

Typical recording settings (Reference values)

Long-term recording capability

Recording time can be as long as 16 hours with two AA Ni-MH rechargeable batteries or about 12 hours with two AA alkaline batteries (both in the 44.1kHz/16-bit mode). A built-in 2 GB flash memory enables up to 3 hours 10 minutes of CD quality (44.1kHz/16-bit) recording or up to 69 hours and 35 minutes of WMA format recording. The LS-10 is also equipped with an SD/SDHC card slot to add additional recording capability.

•See table on page 15 for the reference recording time of each recording mode. • The maximum capacity per ￿le is limited to about

4 GB with the MP3/WMA formats and about 2 GB with the linear PCM (WAV) format. • The maximum recording time per ￿le is about 26 hours 40 minutes with the WMA format. • The recording time available with an SD/SDHC card varies depending on the card. • Check the Olympus website (http://olympus.com) for compatible SD/SDHC cards.

			Recording Situation
Recording Function	Indoor music	Band performance	Performance in a	Bird songs,	Small conference	Large conference
	performance	in a studio	big hall, etc.	train sound, etc.	or interview	in a big hall
MIC SENSE	For most applications, LOW is recommended to reduce noise. HIGH is better for capturing quiet sounds or voices.
		LOW		LOW or HIGH		HIGH
LOW CUT	The low-cut filter function can be activated to record the audio more clearly by cutting low frequencies.
		OFF			ON
Rec Mode	Linear PCM (WAV) is recommended for audio quality; MP3 or WMA is recommended for longer recording time.
		Linear PCM (WAV) format			MP3 format/WMA format
Rec Level	MANUAL is recommended for wider dynamic range (such as in live recording), and AUTO is recommended for voices in a conference.
	MANUAL (The limiter function can also be set.)				AUTO
Zoom Mic	The directivity of the built-in stereo microphones can be adjusted according to the recorded sound source.
	This adjustment is recommended when there is a specific sound source to be captured, for example when recording a lecture.

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