Abstract: A computer-security architecture removes activation authority from client-facing purchase flows. A server records a digital entitlement in an INACTIVE state and issues a presentation artifact. A verification service accepts messages only from trusted origins carrying freshness-bounded evidence and validates using (i) stateless keyed recomputation over a time-windowed payload, (ii) confirmation that token-rail authorization data maps to a registered association within a policy freshness bound, or (iii) a server-maintained session. Activation occurs only on an authoritative commit path that enforces no activation without a durable audit record and effective-once behavior: either a single ACID transaction that conditionally updates state and writes an insert-only audit in the same commit, or an append-only activation ledger with idempotent materialization. Access controls deny issuance-facing code permission to set ACTIVE. Expiration is timer-free via batch or TTL evaluation.

Abstract: An SOVT (semi-occluded vocal tract) exercise device is disclosed, consisting of a compact tubular body with an internal nonlinear airflow path that significantly extends the effective path length of exhaled air. In preferred embodiments a helical partition or insert inside the tube creates a tortuous channel, providing enhanced back-pressure and inertance for vocal training. The device further includes one or more adjustable vent apertures along the tube's wall, which can be selectively opened or closed (for example, by finger, plug, valve, or sleeve) to vary the resistance and/or effective tube length in real time, Certain embodiments incorporate a deformable or one-way valve element at the distal end of the channel that flexes or oscillates under airflow, introducing a pulsating resistance for additional therapeutic benefit.

Abstract: An improved apparatus and method for practicing Semi-Occluded Vocal Tract exercises. The improved apparatus comprises a novel hollow apparatus that enables and enhances semi-occluded vocal tract breathing and vocalizing exercises. A preferable embodiment comprises a hollow air chamber enclosed in an encasing with an air entrance and a plurality of exits. The encasing may be made of metal, rubber, silicone, plastic, or another durable material. The encasing may be rigid or flexible in different embodiments. It may comprise rigid and flexible elements in the same embodiment. In certain embodiments, the encasing comprises a material imbued with or inherently possessing antimicrobial properties such as the oligodynamic effect found in copper, brass, silver, gold, and several other metals and alloys. In preferred embodiments, the air resistance is adjustable. Preferred embodiments comprise elements enabling the apparatus to be worn as a necklace, ring, clip, or other wearable apparatus.

Abstract: This application pertains generally to a physical exercise and therapy apparatus and method, and more specifically to an improved apparatus and method for practicing Semi-Occluded Vocal Tract exercises. The improved apparatus for semi-occluded vocal tract exercises disclosed herein may comprise a novel hollow apparatus that enables and enhances semi-occluded vocal tract breathing and vocalizing exercises. It may further comprise a novel means of adjustment. A preferable embodiment comprises a hollow air chamber or chambers enclosed in an encasing with an air entrance and one or more exits. The encasing may be made of metal, rubber, silicone, plastic, and/or another durable material. The encasing may be rigid or flexible in different embodiments. It may comprise rigid and flexible elements in the same embodiment.

Abstract: An apparatus and method for semi-occluded vocal tract exercises comprises an elongated body having proximal and distal ends. A user can hold the proximal end between the lips. An inlet configured to receive air blown from the mouth of a user is disposed at the proximal end. An exit is disposed opposite to the inlet at the distal end. A channel extends from the inlet to the exit. Apertures of uniform or non-uniform dimensions are disposed over the elongated body. The apertures are located at different distances from the entry. The apertures and the exit are in fluid communication with the inlet. The user can adjust the resistance offered to a flow of air caused by the air blown to the required level by blocking one or more apertures or the exit. The same apparatus can offer a wide range of variable resistance as per the need of a user.

Abstract: An apparatus and method for semi-occluded vocal tract exercises comprises an elongated body having proximal and distal ends. A user can hold the proximal end between the lips. An inlet configured to receive air blown from the mouth of a user is disposed at the proximal end. An exit is disposed opposite to the inlet at the distal end. A channel extends from the inlet to the exit. Apertures of uniform or non-uniform dimensions are disposed over the elongated body. The apertures are located at different distances from the entry. The apertures and the exit are in fluid communication with the inlet. The user can adjust the resistance offered to a flow of air caused by the air blown to the required level by blocking one or more apertures or the exit. The same apparatus can offer a wide range of variable resistance as per the need of a user.

Abstract: The improved apparatus for semi-occluded vocal tract exercises disclosed herein may comprise a novel hollow apparatus that enables and enhances semi-occluded vocal tract breathing and vocalizing exercises. A preferable embodiment comprises a hollow tube. The tube may be made of metal or another durable material. It may be rigid or flexible in different embodiments. In preferred embodiments, the tube would feature a material that has antimicrobial properties such as the oligodynamic effect found in copper, brass, silver, gold, and several other metals and alloys. In certain embodiments it might be approximately 76.2 mm long, with an inner diameter between 2.3 mm and 3.5 mm. In preferred embodiments, the apparatus would have an inner diameter between 2.3 mm and 3.5 mm. In certain embodiments of the present invention, the tube is incorporated into a wearable item such as a necklace. In other embodiments, it is used as an instrument, or as a vocal warm-up tool.