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User guide

The Upright

The Upright is a beautiful Chinese Upright Bass (Double Bass) recorded in detail from three microphone perspectives.

acousticsamples.net/the-upright November 2026
01

Overview

THREE WAYS TO HEAR A DOUBLE BASS

The Upright is a Chinese 4/4 four-string upright bass (double bass), recorded in detail from three microphone perspectives.

Around 2772 samples: 6 velocity layers for the sustain with two takes of each note (2 round robins), 14 velocities for the release, plus hammer-ons, pull-offs, slides and slaps.

02

Interface

Default interface
Default interface
03

Features

Three microphone perspectives

The bass was recorded with a pair of overheads, a microphone next to the F-hole, and the pickup.

Their volumes are mixed on the right of the interface, so you can shape the sound towards more bass, more roundness or more detail and finger noise.

More about this

Mics

Overheads: the level of the overhead pair.

Bass: the level of the microphone next to the F-hole.

Pickup: the level of the pickup.

Legato, slides and slaps

Legato, slides and slaps

Play legato and The Upright connects the notes with real hammer-on and pull-off samples, or with slides. The legato mode and legato distance decide what an overlapping note does and how wide an interval it applies to.

A slap effect can be switched on with its own volume and sensitivity, and an advanced vibrato sits on the modulation wheel.

More about this

Default interface

Legato mode: choose whether playing legato triggers hammer-ons, slides, sustains, or has no effect: Off (E4), Hammer (F4), Slide (F#4) and Legato (G4).

Legato distance: the maximum interval over which the legato applies.

Slap: turns the slap effect on or off (D4), with Volume and Sensitivity controls.

Release volume: the level of the sound produced when you release a string while a note is ringing.

Sensitivity: sets the minimum volume for velocity 1, from a narrow to the full dynamic range.

Percussion and noises

Harmonics, ghost notes and string hits are all sampled, the small details that make a bass line sound played.

There are also percussion samples with round robins: hits with the hand on different parts of the bass.

04

Technical specifications

2.54Gb uncompressed, 987Mb compressed in lossless flac format, around 2772 samples.
three microphone positions (overheads, bass microphones + pickup).
6 Velocity layers for the sustain and two different takes for each note (2 round robins).
14 Velocities for the release.
Hammer on samples.
Pull Off on samples.
Advanced Vibrato effect controlled via modulation wheel.
slides effects.
slap samples.
Harmonics, ghost notes, string hits samples.
Percussion samples with round robins (hits with the hand on different parts of the bass).
Advanced UVI scripting giving you access to a simple yet powerfull interface and advanced features.

Sample player

VSTVST3AUAAXStandalone

The Upright plays in UVI Player (formerly UVI Workstation), UVI's free sample player. We provide it with every library you buy, so you don't need an expensive sampler to use our products. It works on Mac (macOS 10.14 or later, Intel or Apple silicon) and Windows (10 or later), standalone or as a plug-in (VST / VST3 / AU / AAX), in 64-bit only. More about it here.

Copy protection

We use the iLok system to protect our products and you can choose to register your license to your computer or to an iLok dongle. If you decide to use an iLok dongle, both V1 and V2 are compatible with our products. You can activate your license on up to 3 computers or iLok dongles at the same time and you can deactivate one and activate another as many times as you want.

Registration

Once your order is complete, you will be provided with a serial number. You will then be able to register it to your iLok account from our website on this page (you need to be logged in to access this page). The whole process is described in the FAQ (instructions + screencast).