Estrima is a Windows VSTi plug-in for reproducing the sound of vintage string ensembles. It creates the swirling synthetic string sound of the 70’s with a minimum of hassle. Also there is a choir voicing on board. The necessary effects, a vintage-style quad-chorus and a phaser, as well as adjustable paraphonic envelopes and an auto pitch bend function complete the vintage feeling. The sounds are generated without the use of samples. A CPU-saving twenty voice partial phase lock generator is used.